Home / 15,309.52-21,127.42-8,595.78

Finding the Fourth Proportional to 15,309.52, 21,127.42 and 8,595.78

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Solution

The fourth proportional to 15,309.52, 21,127.42 and 8,595.78 is: 11,862.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.52 : 21,127.42 = 8,595.78 : x
  2. Step 2: Convert to fraction form
    15,309.52/21,127.42 = 8,595.78/x
  3. Step 3: Cross multiply
    15,309.52x = 21,127.42 × 8,595.78
  4. Step 4: Simplify right side
    15,309.52x = 181,606,654.29
  5. Step 5: Solve for x
    x = 181,606,654.29/15,309.52
  6. Step 6: Final answer
    x = 11,862.33

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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.