Home / 10,179.47-15,270.32-4,920.55

Finding the Fourth Proportional to 10,179.47, 15,270.32 and 4,920.55

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Solution

The fourth proportional to 10,179.47, 15,270.32 and 4,920.55 is: 7,381.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,179.47 : 15,270.32 = 4,920.55 : x
  2. Step 2: Convert to fraction form
    10,179.47/15,270.32 = 4,920.55/x
  3. Step 3: Cross multiply
    10,179.47x = 15,270.32 × 4,920.55
  4. Step 4: Simplify right side
    10,179.47x = 75,138,347.20
  5. Step 5: Solve for x
    x = 75,138,347.20/10,179.47
  6. Step 6: Final answer
    x = 7,381.36

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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.