Home / 39,364.06-54,320.85-21,458.68

Finding the Fourth Proportional to 39,364.06, 54,320.85 and 21,458.68

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Solution

The fourth proportional to 39,364.06, 54,320.85 and 21,458.68 is: 29,612.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,364.06 : 54,320.85 = 21,458.68 : x
  2. Step 2: Convert to fraction form
    39,364.06/54,320.85 = 21,458.68/x
  3. Step 3: Cross multiply
    39,364.06x = 54,320.85 × 21,458.68
  4. Step 4: Simplify right side
    39,364.06x = 1,165,653,737.48
  5. Step 5: Solve for x
    x = 1,165,653,737.48/39,364.06
  6. Step 6: Final answer
    x = 29,612.13

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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.