Home / 42,600.40-63,911.64-20,430.88

Finding the Fourth Proportional to 42,600.40, 63,911.64 and 20,430.88

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Solution

The fourth proportional to 42,600.40, 63,911.64 and 20,430.88 is: 30,651.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,600.40 : 63,911.64 = 20,430.88 : x
  2. Step 2: Convert to fraction form
    42,600.40/63,911.64 = 20,430.88/x
  3. Step 3: Cross multiply
    42,600.40x = 63,911.64 × 20,430.88
  4. Step 4: Simplify right side
    42,600.40x = 1,305,771,047.44
  5. Step 5: Solve for x
    x = 1,305,771,047.44/42,600.40
  6. Step 6: Final answer
    x = 30,651.61

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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.