Home / 39,363.60-54,320.12-21,458.16

Finding the Fourth Proportional to 39,363.60, 54,320.12 and 21,458.16

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Solution

The fourth proportional to 39,363.60, 54,320.12 and 21,458.16 is: 29,611.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,363.60 : 54,320.12 = 21,458.16 : x
  2. Step 2: Convert to fraction form
    39,363.60/54,320.12 = 21,458.16/x
  3. Step 3: Cross multiply
    39,363.60x = 54,320.12 × 21,458.16
  4. Step 4: Simplify right side
    39,363.60x = 1,165,609,826.18
  5. Step 5: Solve for x
    x = 1,165,609,826.18/39,363.60
  6. Step 6: Final answer
    x = 29,611.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.