Home / 22,816.40-31,485.84-12,744.76

Finding the Fourth Proportional to 22,816.40, 31,485.84 and 12,744.76

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Solution

The fourth proportional to 22,816.40, 31,485.84 and 12,744.76 is: 17,587.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,816.40 : 31,485.84 = 12,744.76 : x
  2. Step 2: Convert to fraction form
    22,816.40/31,485.84 = 12,744.76/x
  3. Step 3: Cross multiply
    22,816.40x = 31,485.84 × 12,744.76
  4. Step 4: Simplify right side
    22,816.40x = 401,279,474.20
  5. Step 5: Solve for x
    x = 401,279,474.20/22,816.40
  6. Step 6: Final answer
    x = 17,587.33

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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.