Home / 42,207.20-63,259.60-18,808.80

Finding the Fourth Proportional to 42,207.20, 63,259.60 and 18,808.80

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Solution

The fourth proportional to 42,207.20, 63,259.60 and 18,808.80 is: 28,190.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,207.20 : 63,259.60 = 18,808.80 : x
  2. Step 2: Convert to fraction form
    42,207.20/63,259.60 = 18,808.80/x
  3. Step 3: Cross multiply
    42,207.20x = 63,259.60 × 18,808.80
  4. Step 4: Simplify right side
    42,207.20x = 1,189,837,164.48
  5. Step 5: Solve for x
    x = 1,189,837,164.48/42,207.20
  6. Step 6: Final answer
    x = 28,190.38

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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.