Home / 42,190.20-63,288.54-12,605.76

Finding the Fourth Proportional to 42,190.20, 63,288.54 and 12,605.76

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Solution

The fourth proportional to 42,190.20, 63,288.54 and 12,605.76 is: 18,909.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,190.20 : 63,288.54 = 12,605.76 : x
  2. Step 2: Convert to fraction form
    42,190.20/63,288.54 = 12,605.76/x
  3. Step 3: Cross multiply
    42,190.20x = 63,288.54 × 12,605.76
  4. Step 4: Simplify right side
    42,190.20x = 797,800,145.99
  5. Step 5: Solve for x
    x = 797,800,145.99/42,190.20
  6. Step 6: Final answer
    x = 18,909.61

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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.