Home / 16,218.72-22,381.80-9,145.10

Finding the Fourth Proportional to 16,218.72, 22,381.80 and 9,145.10

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Solution

The fourth proportional to 16,218.72, 22,381.80 and 9,145.10 is: 12,620.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,218.72 : 22,381.80 = 9,145.10 : x
  2. Step 2: Convert to fraction form
    16,218.72/22,381.80 = 9,145.10/x
  3. Step 3: Cross multiply
    16,218.72x = 22,381.80 × 9,145.10
  4. Step 4: Simplify right side
    16,218.72x = 204,683,799.18
  5. Step 5: Solve for x
    x = 204,683,799.18/16,218.72
  6. Step 6: Final answer
    x = 12,620.22

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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.