Home / 13,122.29-18,108.94-7,153.95

Finding the Fourth Proportional to 13,122.29, 18,108.94 and 7,153.95

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Solution

The fourth proportional to 13,122.29, 18,108.94 and 7,153.95 is: 9,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.29 : 18,108.94 = 7,153.95 : x
  2. Step 2: Convert to fraction form
    13,122.29/18,108.94 = 7,153.95/x
  3. Step 3: Cross multiply
    13,122.29x = 18,108.94 × 7,153.95
  4. Step 4: Simplify right side
    13,122.29x = 129,550,451.31
  5. Step 5: Solve for x
    x = 129,550,451.31/13,122.29
  6. Step 6: Final answer
    x = 9,872.55

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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.