Home / 22,570.10-31,141.49-13,133.30

Finding the Fourth Proportional to 22,570.10, 31,141.49 and 13,133.30

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Solution

The fourth proportional to 22,570.10, 31,141.49 and 13,133.30 is: 18,120.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,570.10 : 31,141.49 = 13,133.30 : x
  2. Step 2: Convert to fraction form
    22,570.10/31,141.49 = 13,133.30/x
  3. Step 3: Cross multiply
    22,570.10x = 31,141.49 × 13,133.30
  4. Step 4: Simplify right side
    22,570.10x = 408,990,530.62
  5. Step 5: Solve for x
    x = 408,990,530.62/22,570.10
  6. Step 6: Final answer
    x = 18,120.90

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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.