Home / 21,158.96-29,132.76-16,106.99

Finding the Fourth Proportional to 21,158.96, 29,132.76 and 16,106.99

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Solution

The fourth proportional to 21,158.96, 29,132.76 and 16,106.99 is: 22,176.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.96 : 29,132.76 = 16,106.99 : x
  2. Step 2: Convert to fraction form
    21,158.96/29,132.76 = 16,106.99/x
  3. Step 3: Cross multiply
    21,158.96x = 29,132.76 × 16,106.99
  4. Step 4: Simplify right side
    21,158.96x = 469,240,988.73
  5. Step 5: Solve for x
    x = 469,240,988.73/21,158.96
  6. Step 6: Final answer
    x = 22,176.95

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Double scale
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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.