Home / 31,555-43,541.22-18,126.84

Finding the Fourth Proportional to 31,555, 43,541.22 and 18,126.84

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Solution

The fourth proportional to 31,555, 43,541.22 and 18,126.84 is: 25,012.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,555 : 43,541.22 = 18,126.84 : x
  2. Step 2: Convert to fraction form
    31,555/43,541.22 = 18,126.84/x
  3. Step 3: Cross multiply
    31,555x = 43,541.22 × 18,126.84
  4. Step 4: Simplify right side
    31,555x = 789,264,728.34
  5. Step 5: Solve for x
    x = 789,264,728.34/31,555
  6. Step 6: Final answer
    x = 25,012.35

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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.