Home / 13,158.82-18,159.15-7,190.49

Finding the Fourth Proportional to 13,158.82, 18,159.15 and 7,190.49

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Solution

The fourth proportional to 13,158.82, 18,159.15 and 7,190.49 is: 9,922.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.82 : 18,159.15 = 7,190.49 : x
  2. Step 2: Convert to fraction form
    13,158.82/18,159.15 = 7,190.49/x
  3. Step 3: Cross multiply
    13,158.82x = 18,159.15 × 7,190.49
  4. Step 4: Simplify right side
    13,158.82x = 130,573,186.48
  5. Step 5: Solve for x
    x = 130,573,186.48/13,158.82
  6. Step 6: Final answer
    x = 9,922.86

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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.