Home / 39,279.93-54,207.45-21,376.09

Finding the Fourth Proportional to 39,279.93, 54,207.45 and 21,376.09

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Solution

The fourth proportional to 39,279.93, 54,207.45 and 21,376.09 is: 29,499.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.93 : 54,207.45 = 21,376.09 : x
  2. Step 2: Convert to fraction form
    39,279.93/54,207.45 = 21,376.09/x
  3. Step 3: Cross multiply
    39,279.93x = 54,207.45 × 21,376.09
  4. Step 4: Simplify right side
    39,279.93x = 1,158,743,411.95
  5. Step 5: Solve for x
    x = 1,158,743,411.95/39,279.93
  6. Step 6: Final answer
    x = 29,499.63

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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.