Home / 21,332.75-29,438.93-11,772.71

Finding the Fourth Proportional to 21,332.75, 29,438.93 and 11,772.71

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Solution

The fourth proportional to 21,332.75, 29,438.93 and 11,772.71 is: 16,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.75 : 29,438.93 = 11,772.71 : x
  2. Step 2: Convert to fraction form
    21,332.75/29,438.93 = 11,772.71/x
  3. Step 3: Cross multiply
    21,332.75x = 29,438.93 × 11,772.71
  4. Step 4: Simplify right side
    21,332.75x = 346,575,978.23
  5. Step 5: Solve for x
    x = 346,575,978.23/21,332.75
  6. Step 6: Final answer
    x = 16,246.20

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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.