Home / 9,721.40-14,582.10-8,166.20

Finding the Fourth Proportional to 9,721.40, 14,582.10 and 8,166.20

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Solution

The fourth proportional to 9,721.40, 14,582.10 and 8,166.20 is: 12,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.40 : 14,582.10 = 8,166.20 : x
  2. Step 2: Convert to fraction form
    9,721.40/14,582.10 = 8,166.20/x
  3. Step 3: Cross multiply
    9,721.40x = 14,582.10 × 8,166.20
  4. Step 4: Simplify right side
    9,721.40x = 119,080,345.02
  5. Step 5: Solve for x
    x = 119,080,345.02/9,721.40
  6. Step 6: Final answer
    x = 12,249.30

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.