Home / 15,340.76-21,170.90-8,626.68

Finding the Fourth Proportional to 15,340.76, 21,170.90 and 8,626.68

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Solution

The fourth proportional to 15,340.76, 21,170.90 and 8,626.68 is: 11,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,340.76 : 21,170.90 = 8,626.68 : x
  2. Step 2: Convert to fraction form
    15,340.76/21,170.90 = 8,626.68/x
  3. Step 3: Cross multiply
    15,340.76x = 21,170.90 × 8,626.68
  4. Step 4: Simplify right side
    15,340.76x = 182,634,579.61
  5. Step 5: Solve for x
    x = 182,634,579.61/15,340.76
  6. Step 6: Final answer
    x = 11,905.18

Related Problems

Find fourth proportional to 7,670.38, 10,585.45 and 4,313.34
Half scale
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Double scale
Find fourth proportional to 15,341.76, 21,172.28 and 8,627.68
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.