Home / 39,279.40-54,206.22-21,375.16

Finding the Fourth Proportional to 39,279.40, 54,206.22 and 21,375.16

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Solution

The fourth proportional to 39,279.40, 54,206.22 and 21,375.16 is: 29,498.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.40 : 54,206.22 = 21,375.16 : x
  2. Step 2: Convert to fraction form
    39,279.40/54,206.22 = 21,375.16/x
  3. Step 3: Cross multiply
    39,279.40x = 54,206.22 × 21,375.16
  4. Step 4: Simplify right side
    39,279.40x = 1,158,666,625.50
  5. Step 5: Solve for x
    x = 1,158,666,625.50/39,279.40
  6. Step 6: Final answer
    x = 29,498.07

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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.