Home / 42,147.22-63,220.84-12,585.82

Finding the Fourth Proportional to 42,147.22, 63,220.84 and 12,585.82

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Solution

The fourth proportional to 42,147.22, 63,220.84 and 12,585.82 is: 18,878.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,147.22 : 63,220.84 = 12,585.82 : x
  2. Step 2: Convert to fraction form
    42,147.22/63,220.84 = 12,585.82/x
  3. Step 3: Cross multiply
    42,147.22x = 63,220.84 × 12,585.82
  4. Step 4: Simplify right side
    42,147.22x = 795,686,112.49
  5. Step 5: Solve for x
    x = 795,686,112.49/42,147.22
  6. Step 6: Final answer
    x = 18,878.73

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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.