Home / 22,555.18-31,131.30-13,125.16

Finding the Fourth Proportional to 22,555.18, 31,131.30 and 13,125.16

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Solution

The fourth proportional to 22,555.18, 31,131.30 and 13,125.16 is: 18,115.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,555.18 : 31,131.30 = 13,125.16 : x
  2. Step 2: Convert to fraction form
    22,555.18/31,131.30 = 13,125.16/x
  3. Step 3: Cross multiply
    22,555.18x = 31,131.30 × 13,125.16
  4. Step 4: Simplify right side
    22,555.18x = 408,603,293.51
  5. Step 5: Solve for x
    x = 408,603,293.51/22,555.18
  6. Step 6: Final answer
    x = 18,115.72

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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.