Home / 42,254.20-63,330.10-18,855.80

Finding the Fourth Proportional to 42,254.20, 63,330.10 and 18,855.80

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Solution

The fourth proportional to 42,254.20, 63,330.10 and 18,855.80 is: 28,260.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,254.20 : 63,330.10 = 18,855.80 : x
  2. Step 2: Convert to fraction form
    42,254.20/63,330.10 = 18,855.80/x
  3. Step 3: Cross multiply
    42,254.20x = 63,330.10 × 18,855.80
  4. Step 4: Simplify right side
    42,254.20x = 1,194,139,699.58
  5. Step 5: Solve for x
    x = 1,194,139,699.58/42,254.20
  6. Step 6: Final answer
    x = 28,260.85

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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.