Home / 13,251.23-18,274.12-8,705.91

Finding the Fourth Proportional to 13,251.23, 18,274.12 and 8,705.91

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Solution

The fourth proportional to 13,251.23, 18,274.12 and 8,705.91 is: 12,005.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.23 : 18,274.12 = 8,705.91 : x
  2. Step 2: Convert to fraction form
    13,251.23/18,274.12 = 8,705.91/x
  3. Step 3: Cross multiply
    13,251.23x = 18,274.12 × 8,705.91
  4. Step 4: Simplify right side
    13,251.23x = 159,092,844.05
  5. Step 5: Solve for x
    x = 159,092,844.05/13,251.23
  6. Step 6: Final answer
    x = 12,005.89

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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.