Home / 30,727.12-42,404.44-18,795.76

Finding the Fourth Proportional to 30,727.12, 42,404.44 and 18,795.76

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Solution

The fourth proportional to 30,727.12, 42,404.44 and 18,795.76 is: 25,938.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,727.12 : 42,404.44 = 18,795.76 : x
  2. Step 2: Convert to fraction form
    30,727.12/42,404.44 = 18,795.76/x
  3. Step 3: Cross multiply
    30,727.12x = 42,404.44 × 18,795.76
  4. Step 4: Simplify right side
    30,727.12x = 797,023,677.17
  5. Step 5: Solve for x
    x = 797,023,677.17/30,727.12
  6. Step 6: Final answer
    x = 25,938.77

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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.