Home / 12,082.57-18,117.70-4,689.15

Finding the Fourth Proportional to 12,082.57, 18,117.70 and 4,689.15

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Solution

The fourth proportional to 12,082.57, 18,117.70 and 4,689.15 is: 7,031.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,082.57 : 18,117.70 = 4,689.15 : x
  2. Step 2: Convert to fraction form
    12,082.57/18,117.70 = 4,689.15/x
  3. Step 3: Cross multiply
    12,082.57x = 18,117.70 × 4,689.15
  4. Step 4: Simplify right side
    12,082.57x = 84,956,612.96
  5. Step 5: Solve for x
    x = 84,956,612.96/12,082.57
  6. Step 6: Final answer
    x = 7,031.34

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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.