Home / 42,264.82-63,355.13-21,140.40

Finding the Fourth Proportional to 42,264.82, 63,355.13 and 21,140.40

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Solution

The fourth proportional to 42,264.82, 63,355.13 and 21,140.40 is: 31,689.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,264.82 : 63,355.13 = 21,140.40 : x
  2. Step 2: Convert to fraction form
    42,264.82/63,355.13 = 21,140.40/x
  3. Step 3: Cross multiply
    42,264.82x = 63,355.13 × 21,140.40
  4. Step 4: Simplify right side
    42,264.82x = 1,339,352,790.25
  5. Step 5: Solve for x
    x = 1,339,352,790.25/42,264.82
  6. Step 6: Final answer
    x = 31,689.54

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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.