Home / 15,505.48-21,398.10-8,432.44

Finding the Fourth Proportional to 15,505.48, 21,398.10 and 8,432.44

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Solution

The fourth proportional to 15,505.48, 21,398.10 and 8,432.44 is: 11,637.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.48 : 21,398.10 = 8,432.44 : x
  2. Step 2: Convert to fraction form
    15,505.48/21,398.10 = 8,432.44/x
  3. Step 3: Cross multiply
    15,505.48x = 21,398.10 × 8,432.44
  4. Step 4: Simplify right side
    15,505.48x = 180,438,194.36
  5. Step 5: Solve for x
    x = 180,438,194.36/15,505.48
  6. Step 6: Final answer
    x = 11,637.06

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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.