Home / 42,488.20-63,643.06-20,279.22

Finding the Fourth Proportional to 42,488.20, 63,643.06 and 20,279.22

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Solution

The fourth proportional to 42,488.20, 63,643.06 and 20,279.22 is: 30,376.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,488.20 : 63,643.06 = 20,279.22 : x
  2. Step 2: Convert to fraction form
    42,488.20/63,643.06 = 20,279.22/x
  3. Step 3: Cross multiply
    42,488.20x = 63,643.06 × 20,279.22
  4. Step 4: Simplify right side
    42,488.20x = 1,290,631,615.21
  5. Step 5: Solve for x
    x = 1,290,631,615.21/42,488.20
  6. Step 6: Final answer
    x = 30,376.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.