Home / 15,056.76-20,776.62-8,340.72

Finding the Fourth Proportional to 15,056.76, 20,776.62 and 8,340.72

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Solution

The fourth proportional to 15,056.76, 20,776.62 and 8,340.72 is: 11,509.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,056.76 : 20,776.62 = 8,340.72 : x
  2. Step 2: Convert to fraction form
    15,056.76/20,776.62 = 8,340.72/x
  3. Step 3: Cross multiply
    15,056.76x = 20,776.62 × 8,340.72
  4. Step 4: Simplify right side
    15,056.76x = 173,291,969.97
  5. Step 5: Solve for x
    x = 173,291,969.97/15,056.76
  6. Step 6: Final answer
    x = 11,509.25

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Half scale
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Double scale
Find fourth proportional to 15,057.76, 20,778 and 8,341.72
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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.