Home / 42,151.40-63,236.28-12,571.64

Finding the Fourth Proportional to 42,151.40, 63,236.28 and 12,571.64

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Solution

The fourth proportional to 42,151.40, 63,236.28 and 12,571.64 is: 18,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,151.40 : 63,236.28 = 12,571.64 : x
  2. Step 2: Convert to fraction form
    42,151.40/63,236.28 = 12,571.64/x
  3. Step 3: Cross multiply
    42,151.40x = 63,236.28 × 12,571.64
  4. Step 4: Simplify right side
    42,151.40x = 794,983,747.10
  5. Step 5: Solve for x
    x = 794,983,747.10/42,151.40
  6. Step 6: Final answer
    x = 18,860.20

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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.