Home / 15,389.52-21,229.08-9,100.68

Finding the Fourth Proportional to 15,389.52, 21,229.08 and 9,100.68

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Solution

The fourth proportional to 15,389.52, 21,229.08 and 9,100.68 is: 12,553.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.52 : 21,229.08 = 9,100.68 : x
  2. Step 2: Convert to fraction form
    15,389.52/21,229.08 = 9,100.68/x
  3. Step 3: Cross multiply
    15,389.52x = 21,229.08 × 9,100.68
  4. Step 4: Simplify right side
    15,389.52x = 193,199,063.77
  5. Step 5: Solve for x
    x = 193,199,063.77/15,389.52
  6. Step 6: Final answer
    x = 12,553.94

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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.