Home / 15,398.91-21,250.49-8,325.35

Finding the Fourth Proportional to 15,398.91, 21,250.49 and 8,325.35

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Solution

The fourth proportional to 15,398.91, 21,250.49 and 8,325.35 is: 11,488.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.91 : 21,250.49 = 8,325.35 : x
  2. Step 2: Convert to fraction form
    15,398.91/21,250.49 = 8,325.35/x
  3. Step 3: Cross multiply
    15,398.91x = 21,250.49 × 8,325.35
  4. Step 4: Simplify right side
    15,398.91x = 176,917,619.04
  5. Step 5: Solve for x
    x = 176,917,619.04/15,398.91
  6. Step 6: Final answer
    x = 11,488.97

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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.