Home / 10,431.91-14,398.40-8,158.77

Finding the Fourth Proportional to 10,431.91, 14,398.40 and 8,158.77

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Solution

The fourth proportional to 10,431.91, 14,398.40 and 8,158.77 is: 11,260.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.91 : 14,398.40 = 8,158.77 : x
  2. Step 2: Convert to fraction form
    10,431.91/14,398.40 = 8,158.77/x
  3. Step 3: Cross multiply
    10,431.91x = 14,398.40 × 8,158.77
  4. Step 4: Simplify right side
    10,431.91x = 117,473,269.96
  5. Step 5: Solve for x
    x = 117,473,269.96/10,431.91
  6. Step 6: Final answer
    x = 11,260.96

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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.