Home / 42,685.16-64,027.76-11,520.41

Finding the Fourth Proportional to 42,685.16, 64,027.76 and 11,520.41

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Solution

The fourth proportional to 42,685.16, 64,027.76 and 11,520.41 is: 17,280.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,685.16 : 64,027.76 = 11,520.41 : x
  2. Step 2: Convert to fraction form
    42,685.16/64,027.76 = 11,520.41/x
  3. Step 3: Cross multiply
    42,685.16x = 64,027.76 × 11,520.41
  4. Step 4: Simplify right side
    42,685.16x = 737,625,668.84
  5. Step 5: Solve for x
    x = 737,625,668.84/42,685.16
  6. Step 6: Final answer
    x = 17,280.61

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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.