Home / 39,180.60-54,070.32-21,276.69

Finding the Fourth Proportional to 39,180.60, 54,070.32 and 21,276.69

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Solution

The fourth proportional to 39,180.60, 54,070.32 and 21,276.69 is: 29,362.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,180.60 : 54,070.32 = 21,276.69 : x
  2. Step 2: Convert to fraction form
    39,180.60/54,070.32 = 21,276.69/x
  3. Step 3: Cross multiply
    39,180.60x = 54,070.32 × 21,276.69
  4. Step 4: Simplify right side
    39,180.60x = 1,150,437,436.84
  5. Step 5: Solve for x
    x = 1,150,437,436.84/39,180.60
  6. Step 6: Final answer
    x = 29,362.43

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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.