Home / 21,088.61-29,101.40-12,136.43

Finding the Fourth Proportional to 21,088.61, 29,101.40 and 12,136.43

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Solution

The fourth proportional to 21,088.61, 29,101.40 and 12,136.43 is: 16,747.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.61 : 29,101.40 = 12,136.43 : x
  2. Step 2: Convert to fraction form
    21,088.61/29,101.40 = 12,136.43/x
  3. Step 3: Cross multiply
    21,088.61x = 29,101.40 × 12,136.43
  4. Step 4: Simplify right side
    21,088.61x = 353,186,943.32
  5. Step 5: Solve for x
    x = 353,186,943.32/21,088.61
  6. Step 6: Final answer
    x = 16,747.76

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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.