Home / 42,383.82-63,574.19-12,800.90

Finding the Fourth Proportional to 42,383.82, 63,574.19 and 12,800.90

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Solution

The fourth proportional to 42,383.82, 63,574.19 and 12,800.90 is: 19,200.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,383.82 : 63,574.19 = 12,800.90 : x
  2. Step 2: Convert to fraction form
    42,383.82/63,574.19 = 12,800.90/x
  3. Step 3: Cross multiply
    42,383.82x = 63,574.19 × 12,800.90
  4. Step 4: Simplify right side
    42,383.82x = 813,806,466.90
  5. Step 5: Solve for x
    x = 813,806,466.90/42,383.82
  6. Step 6: Final answer
    x = 19,200.88

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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.