Home / 13,224.88-18,250.40-7,175.12

Finding the Fourth Proportional to 13,224.88, 18,250.40 and 7,175.12

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Solution

The fourth proportional to 13,224.88, 18,250.40 and 7,175.12 is: 9,901.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,224.88 : 18,250.40 = 7,175.12 : x
  2. Step 2: Convert to fraction form
    13,224.88/18,250.40 = 7,175.12/x
  3. Step 3: Cross multiply
    13,224.88x = 18,250.40 × 7,175.12
  4. Step 4: Simplify right side
    13,224.88x = 130,948,810.05
  5. Step 5: Solve for x
    x = 130,948,810.05/13,224.88
  6. Step 6: Final answer
    x = 9,901.70

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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.