Home / 42,321.36-63,511.20-18,973.92

Finding the Fourth Proportional to 42,321.36, 63,511.20 and 18,973.92

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Solution

The fourth proportional to 42,321.36, 63,511.20 and 18,973.92 is: 28,473.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,321.36 : 63,511.20 = 18,973.92 : x
  2. Step 2: Convert to fraction form
    42,321.36/63,511.20 = 18,973.92/x
  3. Step 3: Cross multiply
    42,321.36x = 63,511.20 × 18,973.92
  4. Step 4: Simplify right side
    42,321.36x = 1,205,056,427.90
  5. Step 5: Solve for x
    x = 1,205,056,427.90/42,321.36
  6. Step 6: Final answer
    x = 28,473.95

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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.