Home / 21,663.06-29,892.86-12,229.80

Finding the Fourth Proportional to 21,663.06, 29,892.86 and 12,229.80

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Solution

The fourth proportional to 21,663.06, 29,892.86 and 12,229.80 is: 16,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,663.06 : 29,892.86 = 12,229.80 : x
  2. Step 2: Convert to fraction form
    21,663.06/29,892.86 = 12,229.80/x
  3. Step 3: Cross multiply
    21,663.06x = 29,892.86 × 12,229.80
  4. Step 4: Simplify right side
    21,663.06x = 365,583,638.08
  5. Step 5: Solve for x
    x = 365,583,638.08/21,663.06
  6. Step 6: Final answer
    x = 16,875.90

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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.