Home / 39,445.16-54,433.60-21,539.68

Finding the Fourth Proportional to 39,445.16, 54,433.60 and 21,539.68

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Solution

The fourth proportional to 39,445.16, 54,433.60 and 21,539.68 is: 29,724.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,445.16 : 54,433.60 = 21,539.68 : x
  2. Step 2: Convert to fraction form
    39,445.16/54,433.60 = 21,539.68/x
  3. Step 3: Cross multiply
    39,445.16x = 54,433.60 × 21,539.68
  4. Step 4: Simplify right side
    39,445.16x = 1,172,482,325.25
  5. Step 5: Solve for x
    x = 1,172,482,325.25/39,445.16
  6. Step 6: Final answer
    x = 29,724.36

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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.