Home / 13,159.20-18,157.68-7,854.24

Finding the Fourth Proportional to 13,159.20, 18,157.68 and 7,854.24

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Solution

The fourth proportional to 13,159.20, 18,157.68 and 7,854.24 is: 10,837.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.20 : 18,157.68 = 7,854.24 : x
  2. Step 2: Convert to fraction form
    13,159.20/18,157.68 = 7,854.24/x
  3. Step 3: Cross multiply
    13,159.20x = 18,157.68 × 7,854.24
  4. Step 4: Simplify right side
    13,159.20x = 142,614,776.56
  5. Step 5: Solve for x
    x = 142,614,776.56/13,159.20
  6. Step 6: Final answer
    x = 10,837.65

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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.