Home / 15,416.40-21,274.55-8,342.76

Finding the Fourth Proportional to 15,416.40, 21,274.55 and 8,342.76

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Solution

The fourth proportional to 15,416.40, 21,274.55 and 8,342.76 is: 11,512.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,416.40 : 21,274.55 = 8,342.76 : x
  2. Step 2: Convert to fraction form
    15,416.40/21,274.55 = 8,342.76/x
  3. Step 3: Cross multiply
    15,416.40x = 21,274.55 × 8,342.76
  4. Step 4: Simplify right side
    15,416.40x = 177,488,423.04
  5. Step 5: Solve for x
    x = 177,488,423.04/15,416.40
  6. Step 6: Final answer
    x = 11,512.96

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Half scale
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Double scale
Find fourth proportional to 15,417.40, 21,275.92 and 8,343.76
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.