Home / 10,280.18-15,420.31-2,488.98

Finding the Fourth Proportional to 10,280.18, 15,420.31 and 2,488.98

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Solution

The fourth proportional to 10,280.18, 15,420.31 and 2,488.98 is: 3,733.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.18 : 15,420.31 = 2,488.98 : x
  2. Step 2: Convert to fraction form
    10,280.18/15,420.31 = 2,488.98/x
  3. Step 3: Cross multiply
    10,280.18x = 15,420.31 × 2,488.98
  4. Step 4: Simplify right side
    10,280.18x = 38,380,843.18
  5. Step 5: Solve for x
    x = 38,380,843.18/10,280.18
  6. Step 6: Final answer
    x = 3,733.48

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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.