Home / 42,138.18-63,207.57-10,548.78

Finding the Fourth Proportional to 42,138.18, 63,207.57 and 10,548.78

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Solution

The fourth proportional to 42,138.18, 63,207.57 and 10,548.78 is: 15,823.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,138.18 : 63,207.57 = 10,548.78 : x
  2. Step 2: Convert to fraction form
    42,138.18/63,207.57 = 10,548.78/x
  3. Step 3: Cross multiply
    42,138.18x = 63,207.57 × 10,548.78
  4. Step 4: Simplify right side
    42,138.18x = 666,762,750.26
  5. Step 5: Solve for x
    x = 666,762,750.26/42,138.18
  6. Step 6: Final answer
    x = 15,823.25

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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.