Home / 16,218.48-22,381.20-9,144.92

Finding the Fourth Proportional to 16,218.48, 22,381.20 and 9,144.92

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Solution

The fourth proportional to 16,218.48, 22,381.20 and 9,144.92 is: 12,619.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,218.48 : 22,381.20 = 9,144.92 : x
  2. Step 2: Convert to fraction form
    16,218.48/22,381.20 = 9,144.92/x
  3. Step 3: Cross multiply
    16,218.48x = 22,381.20 × 9,144.92
  4. Step 4: Simplify right side
    16,218.48x = 204,674,283.50
  5. Step 5: Solve for x
    x = 204,674,283.50/16,218.48
  6. Step 6: Final answer
    x = 12,619.82

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Half scale
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Double scale
Find fourth proportional to 16,219.48, 22,382.58 and 9,145.92
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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.