Home / 21,037.20-29,031.68-11,605.76

Finding the Fourth Proportional to 21,037.20, 29,031.68 and 11,605.76

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Solution

The fourth proportional to 21,037.20, 29,031.68 and 11,605.76 is: 16,016.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.20 : 29,031.68 = 11,605.76 : x
  2. Step 2: Convert to fraction form
    21,037.20/29,031.68 = 11,605.76/x
  3. Step 3: Cross multiply
    21,037.20x = 29,031.68 × 11,605.76
  4. Step 4: Simplify right side
    21,037.20x = 336,934,710.48
  5. Step 5: Solve for x
    x = 336,934,710.48/21,037.20
  6. Step 6: Final answer
    x = 16,016.14

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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.