Home / 42,458.08-63,590-20,287.04

Finding the Fourth Proportional to 42,458.08, 63,590 and 20,287.04

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Solution

The fourth proportional to 42,458.08, 63,590 and 20,287.04 is: 30,384.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,458.08 : 63,590 = 20,287.04 : x
  2. Step 2: Convert to fraction form
    42,458.08/63,590 = 20,287.04/x
  3. Step 3: Cross multiply
    42,458.08x = 63,590 × 20,287.04
  4. Step 4: Simplify right side
    42,458.08x = 1,290,052,873.60
  5. Step 5: Solve for x
    x = 1,290,052,873.60/42,458.08
  6. Step 6: Final answer
    x = 30,384.15

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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.