Home / 47,398.20-65,418.12-28,279.32

Finding the Fourth Proportional to 47,398.20, 65,418.12 and 28,279.32

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Solution

The fourth proportional to 47,398.20, 65,418.12 and 28,279.32 is: 39,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,398.20 : 65,418.12 = 28,279.32 : x
  2. Step 2: Convert to fraction form
    47,398.20/65,418.12 = 28,279.32/x
  3. Step 3: Cross multiply
    47,398.20x = 65,418.12 × 28,279.32
  4. Step 4: Simplify right side
    47,398.20x = 1,849,979,949.28
  5. Step 5: Solve for x
    x = 1,849,979,949.28/47,398.20
  6. Step 6: Final answer
    x = 39,030.60

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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.