Home / 13,159.24-18,171.87-8,451.72

Finding the Fourth Proportional to 13,159.24, 18,171.87 and 8,451.72

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Solution

The fourth proportional to 13,159.24, 18,171.87 and 8,451.72 is: 11,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.24 : 18,171.87 = 8,451.72 : x
  2. Step 2: Convert to fraction form
    13,159.24/18,171.87 = 8,451.72/x
  3. Step 3: Cross multiply
    13,159.24x = 18,171.87 × 8,451.72
  4. Step 4: Simplify right side
    13,159.24x = 153,583,557.12
  5. Step 5: Solve for x
    x = 153,583,557.12/13,159.24
  6. Step 6: Final answer
    x = 11,671.16

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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.