Home / 15,345.11-21,177.36-9,377.92

Finding the Fourth Proportional to 15,345.11, 21,177.36 and 9,377.92

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Solution

The fourth proportional to 15,345.11, 21,177.36 and 9,377.92 is: 12,942.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,345.11 : 21,177.36 = 9,377.92 : x
  2. Step 2: Convert to fraction form
    15,345.11/21,177.36 = 9,377.92/x
  3. Step 3: Cross multiply
    15,345.11x = 21,177.36 × 9,377.92
  4. Step 4: Simplify right side
    15,345.11x = 198,599,587.89
  5. Step 5: Solve for x
    x = 198,599,587.89/15,345.11
  6. Step 6: Final answer
    x = 12,942.21

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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.