Home / 21,143.04-29,177.28-11,711.52

Finding the Fourth Proportional to 21,143.04, 29,177.28 and 11,711.52

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Solution

The fourth proportional to 21,143.04, 29,177.28 and 11,711.52 is: 16,161.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143.04 : 29,177.28 = 11,711.52 : x
  2. Step 2: Convert to fraction form
    21,143.04/29,177.28 = 11,711.52/x
  3. Step 3: Cross multiply
    21,143.04x = 29,177.28 × 11,711.52
  4. Step 4: Simplify right side
    21,143.04x = 341,710,298.27
  5. Step 5: Solve for x
    x = 341,710,298.27/21,143.04
  6. Step 6: Final answer
    x = 16,161.83

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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.