Home / 13,157.72-18,154.68-7,851.50

Finding the Fourth Proportional to 13,157.72, 18,154.68 and 7,851.50

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Solution

The fourth proportional to 13,157.72, 18,154.68 and 7,851.50 is: 10,833.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.72 : 18,154.68 = 7,851.50 : x
  2. Step 2: Convert to fraction form
    13,157.72/18,154.68 = 7,851.50/x
  3. Step 3: Cross multiply
    13,157.72x = 18,154.68 × 7,851.50
  4. Step 4: Simplify right side
    13,157.72x = 142,541,470.02
  5. Step 5: Solve for x
    x = 142,541,470.02/13,157.72
  6. Step 6: Final answer
    x = 10,833.30

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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.