Home / 21,358.64-29,472.18-11,927.60

Finding the Fourth Proportional to 21,358.64, 29,472.18 and 11,927.60

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Solution

The fourth proportional to 21,358.64, 29,472.18 and 11,927.60 is: 16,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.64 : 29,472.18 = 11,927.60 : x
  2. Step 2: Convert to fraction form
    21,358.64/29,472.18 = 11,927.60/x
  3. Step 3: Cross multiply
    21,358.64x = 29,472.18 × 11,927.60
  4. Step 4: Simplify right side
    21,358.64x = 351,532,374.17
  5. Step 5: Solve for x
    x = 351,532,374.17/21,358.64
  6. Step 6: Final answer
    x = 16,458.56

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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.