Home / 42,028.88-63,043.52-12,447.28

Finding the Fourth Proportional to 42,028.88, 63,043.52 and 12,447.28

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Solution

The fourth proportional to 42,028.88, 63,043.52 and 12,447.28 is: 18,670.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,028.88 : 63,043.52 = 12,447.28 : x
  2. Step 2: Convert to fraction form
    42,028.88/63,043.52 = 12,447.28/x
  3. Step 3: Cross multiply
    42,028.88x = 63,043.52 × 12,447.28
  4. Step 4: Simplify right side
    42,028.88x = 784,720,219.13
  5. Step 5: Solve for x
    x = 784,720,219.13/42,028.88
  6. Step 6: Final answer
    x = 18,670.98

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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.