Home / 30,809.86-42,517.62-17,381.08

Finding the Fourth Proportional to 30,809.86, 42,517.62 and 17,381.08

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Solution

The fourth proportional to 30,809.86, 42,517.62 and 17,381.08 is: 23,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,809.86 : 42,517.62 = 17,381.08 : x
  2. Step 2: Convert to fraction form
    30,809.86/42,517.62 = 17,381.08/x
  3. Step 3: Cross multiply
    30,809.86x = 42,517.62 × 17,381.08
  4. Step 4: Simplify right side
    30,809.86x = 739,002,154.63
  5. Step 5: Solve for x
    x = 739,002,154.63/30,809.86
  6. Step 6: Final answer
    x = 23,985.90

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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.