Home / 10,186.80-15,278.28-4,989.36

Finding the Fourth Proportional to 10,186.80, 15,278.28 and 4,989.36

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Solution

The fourth proportional to 10,186.80, 15,278.28 and 4,989.36 is: 7,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.80 : 15,278.28 = 4,989.36 : x
  2. Step 2: Convert to fraction form
    10,186.80/15,278.28 = 4,989.36/x
  3. Step 3: Cross multiply
    10,186.80x = 15,278.28 × 4,989.36
  4. Step 4: Simplify right side
    10,186.80x = 76,228,839.10
  5. Step 5: Solve for x
    x = 76,228,839.10/10,186.80
  6. Step 6: Final answer
    x = 7,483.10

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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.