Home / 12,387.90-17,097.57-7,082.67

Finding the Fourth Proportional to 12,387.90, 17,097.57 and 7,082.67

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Solution

The fourth proportional to 12,387.90, 17,097.57 and 7,082.67 is: 9,775.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.90 : 17,097.57 = 7,082.67 : x
  2. Step 2: Convert to fraction form
    12,387.90/17,097.57 = 7,082.67/x
  3. Step 3: Cross multiply
    12,387.90x = 17,097.57 × 7,082.67
  4. Step 4: Simplify right side
    12,387.90x = 121,096,446.11
  5. Step 5: Solve for x
    x = 121,096,446.11/12,387.90
  6. Step 6: Final answer
    x = 9,775.38

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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.