Home / 13,160.56-18,160.80-7,191.88

Finding the Fourth Proportional to 13,160.56, 18,160.80 and 7,191.88

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Solution

The fourth proportional to 13,160.56, 18,160.80 and 7,191.88 is: 9,924.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.56 : 18,160.80 = 7,191.88 : x
  2. Step 2: Convert to fraction form
    13,160.56/18,160.80 = 7,191.88/x
  3. Step 3: Cross multiply
    13,160.56x = 18,160.80 × 7,191.88
  4. Step 4: Simplify right side
    13,160.56x = 130,610,294.30
  5. Step 5: Solve for x
    x = 130,610,294.30/13,160.56
  6. Step 6: Final answer
    x = 9,924.37

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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.