Home / 42,760.60-64,140.90-13,175.80

Finding the Fourth Proportional to 42,760.60, 64,140.90 and 13,175.80

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Solution

The fourth proportional to 42,760.60, 64,140.90 and 13,175.80 is: 19,763.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,760.60 : 64,140.90 = 13,175.80 : x
  2. Step 2: Convert to fraction form
    42,760.60/64,140.90 = 13,175.80/x
  3. Step 3: Cross multiply
    42,760.60x = 64,140.90 × 13,175.80
  4. Step 4: Simplify right side
    42,760.60x = 845,107,670.22
  5. Step 5: Solve for x
    x = 845,107,670.22/42,760.60
  6. Step 6: Final answer
    x = 19,763.70

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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.