Home / 10,280.31-15,330.21-10,186.76

Finding the Fourth Proportional to 10,280.31, 15,330.21 and 10,186.76

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Solution

The fourth proportional to 10,280.31, 15,330.21 and 10,186.76 is: 15,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.31 : 15,330.21 = 10,186.76 : x
  2. Step 2: Convert to fraction form
    10,280.31/15,330.21 = 10,186.76/x
  3. Step 3: Cross multiply
    10,280.31x = 15,330.21 × 10,186.76
  4. Step 4: Simplify right side
    10,280.31x = 156,165,093.37
  5. Step 5: Solve for x
    x = 156,165,093.37/10,280.31
  6. Step 6: Final answer
    x = 15,190.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.