Home / 21,332.90-29,439.15-11,772.86

Finding the Fourth Proportional to 21,332.90, 29,439.15 and 11,772.86

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Solution

The fourth proportional to 21,332.90, 29,439.15 and 11,772.86 is: 16,246.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.90 : 29,439.15 = 11,772.86 : x
  2. Step 2: Convert to fraction form
    21,332.90/29,439.15 = 11,772.86/x
  3. Step 3: Cross multiply
    21,332.90x = 29,439.15 × 11,772.86
  4. Step 4: Simplify right side
    21,332.90x = 346,582,991.47
  5. Step 5: Solve for x
    x = 346,582,991.47/21,332.90
  6. Step 6: Final answer
    x = 16,246.41

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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.