Home / 30,875.62-42,609.12-18,932.02

Finding the Fourth Proportional to 30,875.62, 42,609.12 and 18,932.02

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Solution

The fourth proportional to 30,875.62, 42,609.12 and 18,932.02 is: 26,126.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,875.62 : 42,609.12 = 18,932.02 : x
  2. Step 2: Convert to fraction form
    30,875.62/42,609.12 = 18,932.02/x
  3. Step 3: Cross multiply
    30,875.62x = 42,609.12 × 18,932.02
  4. Step 4: Simplify right side
    30,875.62x = 806,676,712.02
  5. Step 5: Solve for x
    x = 806,676,712.02/30,875.62
  6. Step 6: Final answer
    x = 26,126.66

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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.