Home / 15,384.52-21,231.14-9,418.92

Finding the Fourth Proportional to 15,384.52, 21,231.14 and 9,418.92

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Solution

The fourth proportional to 15,384.52, 21,231.14 and 9,418.92 is: 12,998.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,384.52 : 21,231.14 = 9,418.92 : x
  2. Step 2: Convert to fraction form
    15,384.52/21,231.14 = 9,418.92/x
  3. Step 3: Cross multiply
    15,384.52x = 21,231.14 × 9,418.92
  4. Step 4: Simplify right side
    15,384.52x = 199,974,409.17
  5. Step 5: Solve for x
    x = 199,974,409.17/15,384.52
  6. Step 6: Final answer
    x = 12,998.42

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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.