Home / 15,472.41-21,351.90-8,398.95

Finding the Fourth Proportional to 15,472.41, 21,351.90 and 8,398.95

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Solution

The fourth proportional to 15,472.41, 21,351.90 and 8,398.95 is: 11,590.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472.41 : 21,351.90 = 8,398.95 : x
  2. Step 2: Convert to fraction form
    15,472.41/21,351.90 = 8,398.95/x
  3. Step 3: Cross multiply
    15,472.41x = 21,351.90 × 8,398.95
  4. Step 4: Simplify right side
    15,472.41x = 179,333,540.51
  5. Step 5: Solve for x
    x = 179,333,540.51/15,472.41
  6. Step 6: Final answer
    x = 11,590.54

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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.