Home / 42,157.13-63,266.85-19,970.55

Finding the Fourth Proportional to 42,157.13, 63,266.85 and 19,970.55

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Solution

The fourth proportional to 42,157.13, 63,266.85 and 19,970.55 is: 29,970.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,157.13 : 63,266.85 = 19,970.55 : x
  2. Step 2: Convert to fraction form
    42,157.13/63,266.85 = 19,970.55/x
  3. Step 3: Cross multiply
    42,157.13x = 63,266.85 × 19,970.55
  4. Step 4: Simplify right side
    42,157.13x = 1,263,473,791.27
  5. Step 5: Solve for x
    x = 1,263,473,791.27/42,157.13
  6. Step 6: Final answer
    x = 29,970.59

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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.