Home / 30,727.90-42,407.68-18,799.16

Finding the Fourth Proportional to 30,727.90, 42,407.68 and 18,799.16

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Solution

The fourth proportional to 30,727.90, 42,407.68 and 18,799.16 is: 25,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,727.90 : 42,407.68 = 18,799.16 : x
  2. Step 2: Convert to fraction form
    30,727.90/42,407.68 = 18,799.16/x
  3. Step 3: Cross multiply
    30,727.90x = 42,407.68 × 18,799.16
  4. Step 4: Simplify right side
    30,727.90x = 797,228,820.57
  5. Step 5: Solve for x
    x = 797,228,820.57/30,727.90
  6. Step 6: Final answer
    x = 25,944.79

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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.