Home / 15,845.40-21,868.92-9,131.04

Finding the Fourth Proportional to 15,845.40, 21,868.92 and 9,131.04

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Solution

The fourth proportional to 15,845.40, 21,868.92 and 9,131.04 is: 12,602.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.40 : 21,868.92 = 9,131.04 : x
  2. Step 2: Convert to fraction form
    15,845.40/21,868.92 = 9,131.04/x
  3. Step 3: Cross multiply
    15,845.40x = 21,868.92 × 9,131.04
  4. Step 4: Simplify right side
    15,845.40x = 199,685,983.28
  5. Step 5: Solve for x
    x = 199,685,983.28/15,845.40
  6. Step 6: Final answer
    x = 12,602.14

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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.