Home / 15,129.02-20,875.59-8,414.48

Finding the Fourth Proportional to 15,129.02, 20,875.59 and 8,414.48

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Solution

The fourth proportional to 15,129.02, 20,875.59 and 8,414.48 is: 11,610.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.02 : 20,875.59 = 8,414.48 : x
  2. Step 2: Convert to fraction form
    15,129.02/20,875.59 = 8,414.48/x
  3. Step 3: Cross multiply
    15,129.02x = 20,875.59 × 8,414.48
  4. Step 4: Simplify right side
    15,129.02x = 175,657,234.54
  5. Step 5: Solve for x
    x = 175,657,234.54/15,129.02
  6. Step 6: Final answer
    x = 11,610.62

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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.