Home / 42,278.76-63,425.43-18,907.02

Finding the Fourth Proportional to 42,278.76, 63,425.43 and 18,907.02

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Solution

The fourth proportional to 42,278.76, 63,425.43 and 18,907.02 is: 28,363.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,278.76 : 63,425.43 = 18,907.02 : x
  2. Step 2: Convert to fraction form
    42,278.76/63,425.43 = 18,907.02/x
  3. Step 3: Cross multiply
    42,278.76x = 63,425.43 × 18,907.02
  4. Step 4: Simplify right side
    42,278.76x = 1,199,185,873.52
  5. Step 5: Solve for x
    x = 1,199,185,873.52/42,278.76
  6. Step 6: Final answer
    x = 28,363.79

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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.