Home / 38,487.60-57,731.40-12,192.30

Finding the Fourth Proportional to 38,487.60, 57,731.40 and 12,192.30

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Solution

The fourth proportional to 38,487.60, 57,731.40 and 12,192.30 is: 18,288.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,487.60 : 57,731.40 = 12,192.30 : x
  2. Step 2: Convert to fraction form
    38,487.60/57,731.40 = 12,192.30/x
  3. Step 3: Cross multiply
    38,487.60x = 57,731.40 × 12,192.30
  4. Step 4: Simplify right side
    38,487.60x = 703,878,548.22
  5. Step 5: Solve for x
    x = 703,878,548.22/38,487.60
  6. Step 6: Final answer
    x = 18,288.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.