Home / 21,037.20-29,010.60-16,319.76

Finding the Fourth Proportional to 21,037.20, 29,010.60 and 16,319.76

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Solution

The fourth proportional to 21,037.20, 29,010.60 and 16,319.76 is: 22,505.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.20 : 29,010.60 = 16,319.76 : x
  2. Step 2: Convert to fraction form
    21,037.20/29,010.60 = 16,319.76/x
  3. Step 3: Cross multiply
    21,037.20x = 29,010.60 × 16,319.76
  4. Step 4: Simplify right side
    21,037.20x = 473,446,029.46
  5. Step 5: Solve for x
    x = 473,446,029.46/21,037.20
  6. Step 6: Final answer
    x = 22,505.18

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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.