Home / 10,723.91-14,805.90-8,739.21

Finding the Fourth Proportional to 10,723.91, 14,805.90 and 8,739.21

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Solution

The fourth proportional to 10,723.91, 14,805.90 and 8,739.21 is: 12,065.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,723.91 : 14,805.90 = 8,739.21 : x
  2. Step 2: Convert to fraction form
    10,723.91/14,805.90 = 8,739.21/x
  3. Step 3: Cross multiply
    10,723.91x = 14,805.90 × 8,739.21
  4. Step 4: Simplify right side
    10,723.91x = 129,391,869.34
  5. Step 5: Solve for x
    x = 129,391,869.34/10,723.91
  6. Step 6: Final answer
    x = 12,065.74

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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.