Home / 20,001.84-30,002.72-7,681.20

Finding the Fourth Proportional to 20,001.84, 30,002.72 and 7,681.20

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Solution

The fourth proportional to 20,001.84, 30,002.72 and 7,681.20 is: 11,521.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001.84 : 30,002.72 = 7,681.20 : x
  2. Step 2: Convert to fraction form
    20,001.84/30,002.72 = 7,681.20/x
  3. Step 3: Cross multiply
    20,001.84x = 30,002.72 × 7,681.20
  4. Step 4: Simplify right side
    20,001.84x = 230,456,892.86
  5. Step 5: Solve for x
    x = 230,456,892.86/20,001.84
  6. Step 6: Final answer
    x = 11,521.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.