Home / 13,150.89-18,148.62-7,182.88

Finding the Fourth Proportional to 13,150.89, 18,148.62 and 7,182.88

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Solution

The fourth proportional to 13,150.89, 18,148.62 and 7,182.88 is: 9,912.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150.89 : 18,148.62 = 7,182.88 : x
  2. Step 2: Convert to fraction form
    13,150.89/18,148.62 = 7,182.88/x
  3. Step 3: Cross multiply
    13,150.89x = 18,148.62 × 7,182.88
  4. Step 4: Simplify right side
    13,150.89x = 130,359,341.19
  5. Step 5: Solve for x
    x = 130,359,341.19/13,150.89
  6. Step 6: Final answer
    x = 9,912.59

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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.