Home / 20,997.47-28,967.14-14,189.29

Finding the Fourth Proportional to 20,997.47, 28,967.14 and 14,189.29

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Solution

The fourth proportional to 20,997.47, 28,967.14 and 14,189.29 is: 19,574.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.47 : 28,967.14 = 14,189.29 : x
  2. Step 2: Convert to fraction form
    20,997.47/28,967.14 = 14,189.29/x
  3. Step 3: Cross multiply
    20,997.47x = 28,967.14 × 14,189.29
  4. Step 4: Simplify right side
    20,997.47x = 411,023,149.93
  5. Step 5: Solve for x
    x = 411,023,149.93/20,997.47
  6. Step 6: Final answer
    x = 19,574.89

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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.