Home / 18,643.29-25,731.45-10,690.89

Finding the Fourth Proportional to 18,643.29, 25,731.45 and 10,690.89

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Solution

The fourth proportional to 18,643.29, 25,731.45 and 10,690.89 is: 14,755.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.29 : 25,731.45 = 10,690.89 : x
  2. Step 2: Convert to fraction form
    18,643.29/25,731.45 = 10,690.89/x
  3. Step 3: Cross multiply
    18,643.29x = 25,731.45 × 10,690.89
  4. Step 4: Simplify right side
    18,643.29x = 275,092,101.49
  5. Step 5: Solve for x
    x = 275,092,101.49/18,643.29
  6. Step 6: Final answer
    x = 14,755.56

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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.