Home / 42,321.44-63,488.64-11,159.12

Finding the Fourth Proportional to 42,321.44, 63,488.64 and 11,159.12

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Solution

The fourth proportional to 42,321.44, 63,488.64 and 11,159.12 is: 16,740.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,321.44 : 63,488.64 = 11,159.12 : x
  2. Step 2: Convert to fraction form
    42,321.44/63,488.64 = 11,159.12/x
  3. Step 3: Cross multiply
    42,321.44x = 63,488.64 × 11,159.12
  4. Step 4: Simplify right side
    42,321.44x = 708,477,352.40
  5. Step 5: Solve for x
    x = 708,477,352.40/42,321.44
  6. Step 6: Final answer
    x = 16,740.39

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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.