Home / 21,088.98-29,101.92-12,136.80

Finding the Fourth Proportional to 21,088.98, 29,101.92 and 12,136.80

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Solution

The fourth proportional to 21,088.98, 29,101.92 and 12,136.80 is: 16,748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.98 : 29,101.92 = 12,136.80 : x
  2. Step 2: Convert to fraction form
    21,088.98/29,101.92 = 12,136.80/x
  3. Step 3: Cross multiply
    21,088.98x = 29,101.92 × 12,136.80
  4. Step 4: Simplify right side
    21,088.98x = 353,204,182.66
  5. Step 5: Solve for x
    x = 353,204,182.66/21,088.98
  6. Step 6: Final answer
    x = 16,748.28

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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.