Home / 13,191.49-18,204.29-7,141.79

Finding the Fourth Proportional to 13,191.49, 18,204.29 and 7,141.79

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Solution

The fourth proportional to 13,191.49, 18,204.29 and 7,141.79 is: 9,855.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.49 : 18,204.29 = 7,141.79 : x
  2. Step 2: Convert to fraction form
    13,191.49/18,204.29 = 7,141.79/x
  3. Step 3: Cross multiply
    13,191.49x = 18,204.29 × 7,141.79
  4. Step 4: Simplify right side
    13,191.49x = 130,011,278.14
  5. Step 5: Solve for x
    x = 130,011,278.14/13,191.49
  6. Step 6: Final answer
    x = 9,855.69

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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.