Home / 39,279.15-54,205.89-21,374.46

Finding the Fourth Proportional to 39,279.15, 54,205.89 and 21,374.46

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Solution

The fourth proportional to 39,279.15, 54,205.89 and 21,374.46 is: 29,497.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.15 : 54,205.89 = 21,374.46 : x
  2. Step 2: Convert to fraction form
    39,279.15/54,205.89 = 21,374.46/x
  3. Step 3: Cross multiply
    39,279.15x = 54,205.89 × 21,374.46
  4. Step 4: Simplify right side
    39,279.15x = 1,158,621,627.57
  5. Step 5: Solve for x
    x = 1,158,621,627.57/39,279.15
  6. Step 6: Final answer
    x = 29,497.12

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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.