Home / 13,159.89-18,160.62-7,191.18

Finding the Fourth Proportional to 13,159.89, 18,160.62 and 7,191.18

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Solution

The fourth proportional to 13,159.89, 18,160.62 and 7,191.18 is: 9,923.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.89 : 18,160.62 = 7,191.18 : x
  2. Step 2: Convert to fraction form
    13,159.89/18,160.62 = 7,191.18/x
  3. Step 3: Cross multiply
    13,159.89x = 18,160.62 × 7,191.18
  4. Step 4: Simplify right side
    13,159.89x = 130,596,287.33
  5. Step 5: Solve for x
    x = 130,596,287.33/13,159.89
  6. Step 6: Final answer
    x = 9,923.81

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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.