Home / 30,845.16-42,545.55-18,742.56

Finding the Fourth Proportional to 30,845.16, 42,545.55 and 18,742.56

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Solution

The fourth proportional to 30,845.16, 42,545.55 and 18,742.56 is: 25,852.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,845.16 : 42,545.55 = 18,742.56 : x
  2. Step 2: Convert to fraction form
    30,845.16/42,545.55 = 18,742.56/x
  3. Step 3: Cross multiply
    30,845.16x = 42,545.55 × 18,742.56
  4. Step 4: Simplify right side
    30,845.16x = 797,412,523.61
  5. Step 5: Solve for x
    x = 797,412,523.61/30,845.16
  6. Step 6: Final answer
    x = 25,852.11

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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.