Home / 18,543.98-25,576.75-12,878.74

Finding the Fourth Proportional to 18,543.98, 25,576.75 and 12,878.74

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Solution

The fourth proportional to 18,543.98, 25,576.75 and 12,878.74 is: 17,762.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,543.98 : 25,576.75 = 12,878.74 : x
  2. Step 2: Convert to fraction form
    18,543.98/25,576.75 = 12,878.74/x
  3. Step 3: Cross multiply
    18,543.98x = 25,576.75 × 12,878.74
  4. Step 4: Simplify right side
    18,543.98x = 329,396,248.90
  5. Step 5: Solve for x
    x = 329,396,248.90/18,543.98
  6. Step 6: Final answer
    x = 17,762.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.