Home / 11,870.20-16,363.38-8,720.92

Finding the Fourth Proportional to 11,870.20, 16,363.38 and 8,720.92

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Solution

The fourth proportional to 11,870.20, 16,363.38 and 8,720.92 is: 12,022.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,870.20 : 16,363.38 = 8,720.92 : x
  2. Step 2: Convert to fraction form
    11,870.20/16,363.38 = 8,720.92/x
  3. Step 3: Cross multiply
    11,870.20x = 16,363.38 × 8,720.92
  4. Step 4: Simplify right side
    11,870.20x = 142,703,727.91
  5. Step 5: Solve for x
    x = 142,703,727.91/11,870.20
  6. Step 6: Final answer
    x = 12,022.02

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Half scale
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Double scale
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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.