Home / 10,409.85-15,689.70-8,966.43

Finding the Fourth Proportional to 10,409.85, 15,689.70 and 8,966.43

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Solution

The fourth proportional to 10,409.85, 15,689.70 and 8,966.43 is: 13,514.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,409.85 : 15,689.70 = 8,966.43 : x
  2. Step 2: Convert to fraction form
    10,409.85/15,689.70 = 8,966.43/x
  3. Step 3: Cross multiply
    10,409.85x = 15,689.70 × 8,966.43
  4. Step 4: Simplify right side
    10,409.85x = 140,680,596.77
  5. Step 5: Solve for x
    x = 140,680,596.77/10,409.85
  6. Step 6: Final answer
    x = 13,514.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.