Home / 42,378.62-63,570.97-11,213.50

Finding the Fourth Proportional to 42,378.62, 63,570.97 and 11,213.50

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Solution

The fourth proportional to 42,378.62, 63,570.97 and 11,213.50 is: 16,821.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,378.62 : 63,570.97 = 11,213.50 : x
  2. Step 2: Convert to fraction form
    42,378.62/63,570.97 = 11,213.50/x
  3. Step 3: Cross multiply
    42,378.62x = 63,570.97 × 11,213.50
  4. Step 4: Simplify right side
    42,378.62x = 712,853,072.10
  5. Step 5: Solve for x
    x = 712,853,072.10/42,378.62
  6. Step 6: Final answer
    x = 16,821.05

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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.