Home / 13,159.50-18,159.96-7,191.15

Finding the Fourth Proportional to 13,159.50, 18,159.96 and 7,191.15

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Solution

The fourth proportional to 13,159.50, 18,159.96 and 7,191.15 is: 9,923.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.50 : 18,159.96 = 7,191.15 : x
  2. Step 2: Convert to fraction form
    13,159.50/18,159.96 = 7,191.15/x
  3. Step 3: Cross multiply
    13,159.50x = 18,159.96 × 7,191.15
  4. Step 4: Simplify right side
    13,159.50x = 130,590,996.35
  5. Step 5: Solve for x
    x = 130,590,996.35/13,159.50
  6. Step 6: Final answer
    x = 9,923.71

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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.