Home / 15,330.30-21,155.49-9,044.70

Finding the Fourth Proportional to 15,330.30, 21,155.49 and 9,044.70

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Solution

The fourth proportional to 15,330.30, 21,155.49 and 9,044.70 is: 12,481.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.30 : 21,155.49 = 9,044.70 : x
  2. Step 2: Convert to fraction form
    15,330.30/21,155.49 = 9,044.70/x
  3. Step 3: Cross multiply
    15,330.30x = 21,155.49 × 9,044.70
  4. Step 4: Simplify right side
    15,330.30x = 191,345,060.40
  5. Step 5: Solve for x
    x = 191,345,060.40/15,330.30
  6. Step 6: Final answer
    x = 12,481.49

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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.