Home / 21,501.04-29,666.24-12,543.43

Finding the Fourth Proportional to 21,501.04, 29,666.24 and 12,543.43

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Solution

The fourth proportional to 21,501.04, 29,666.24 and 12,543.43 is: 17,306.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,501.04 : 29,666.24 = 12,543.43 : x
  2. Step 2: Convert to fraction form
    21,501.04/29,666.24 = 12,543.43/x
  3. Step 3: Cross multiply
    21,501.04x = 29,666.24 × 12,543.43
  4. Step 4: Simplify right side
    21,501.04x = 372,116,314.96
  5. Step 5: Solve for x
    x = 372,116,314.96/21,501.04
  6. Step 6: Final answer
    x = 17,306.90

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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.