Home / 22,558.02-31,133.25-13,129.62

Finding the Fourth Proportional to 22,558.02, 31,133.25 and 13,129.62

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Solution

The fourth proportional to 22,558.02, 31,133.25 and 13,129.62 is: 18,120.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,558.02 : 31,133.25 = 13,129.62 : x
  2. Step 2: Convert to fraction form
    22,558.02/31,133.25 = 13,129.62/x
  3. Step 3: Cross multiply
    22,558.02x = 31,133.25 × 13,129.62
  4. Step 4: Simplify right side
    22,558.02x = 408,767,741.87
  5. Step 5: Solve for x
    x = 408,767,741.87/22,558.02
  6. Step 6: Final answer
    x = 18,120.73

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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.