Home / 13,126.43-18,104.23-8,411.15

Finding the Fourth Proportional to 13,126.43, 18,104.23 and 8,411.15

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Solution

The fourth proportional to 13,126.43, 18,104.23 and 8,411.15 is: 11,600.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.43 : 18,104.23 = 8,411.15 : x
  2. Step 2: Convert to fraction form
    13,126.43/18,104.23 = 8,411.15/x
  3. Step 3: Cross multiply
    13,126.43x = 18,104.23 × 8,411.15
  4. Step 4: Simplify right side
    13,126.43x = 152,277,394.16
  5. Step 5: Solve for x
    x = 152,277,394.16/13,126.43
  6. Step 6: Final answer
    x = 11,600.82

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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.