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Finding the Fourth Proportional to 22,399.98, 30,899.12 and 14,001.90

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Solution

The fourth proportional to 22,399.98, 30,899.12 and 14,001.90 is: 19,314.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,399.98 : 30,899.12 = 14,001.90 : x
  2. Step 2: Convert to fraction form
    22,399.98/30,899.12 = 14,001.90/x
  3. Step 3: Cross multiply
    22,399.98x = 30,899.12 × 14,001.90
  4. Step 4: Simplify right side
    22,399.98x = 432,646,318.32
  5. Step 5: Solve for x
    x = 432,646,318.32/22,399.98
  6. Step 6: Final answer
    x = 19,314.59

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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.