Home / 30,123.72-41,570.13-18,187.56

Finding the Fourth Proportional to 30,123.72, 41,570.13 and 18,187.56

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Solution

The fourth proportional to 30,123.72, 41,570.13 and 18,187.56 is: 25,098.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,123.72 : 41,570.13 = 18,187.56 : x
  2. Step 2: Convert to fraction form
    30,123.72/41,570.13 = 18,187.56/x
  3. Step 3: Cross multiply
    30,123.72x = 41,570.13 × 18,187.56
  4. Step 4: Simplify right side
    30,123.72x = 756,059,233.58
  5. Step 5: Solve for x
    x = 756,059,233.58/30,123.72
  6. Step 6: Final answer
    x = 25,098.47

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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.