Home / 42,017.76-63,004.34-12,431.52

Finding the Fourth Proportional to 42,017.76, 63,004.34 and 12,431.52

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Solution

The fourth proportional to 42,017.76, 63,004.34 and 12,431.52 is: 18,640.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,017.76 : 63,004.34 = 12,431.52 : x
  2. Step 2: Convert to fraction form
    42,017.76/63,004.34 = 12,431.52/x
  3. Step 3: Cross multiply
    42,017.76x = 63,004.34 × 12,431.52
  4. Step 4: Simplify right side
    42,017.76x = 783,239,712.80
  5. Step 5: Solve for x
    x = 783,239,712.80/42,017.76
  6. Step 6: Final answer
    x = 18,640.68

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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.