Home / 21,860.61-32,761.89-8,705.76

Finding the Fourth Proportional to 21,860.61, 32,761.89 and 8,705.76

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Solution

The fourth proportional to 21,860.61, 32,761.89 and 8,705.76 is: 13,047.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.61 : 32,761.89 = 8,705.76 : x
  2. Step 2: Convert to fraction form
    21,860.61/32,761.89 = 8,705.76/x
  3. Step 3: Cross multiply
    21,860.61x = 32,761.89 × 8,705.76
  4. Step 4: Simplify right side
    21,860.61x = 285,217,151.49
  5. Step 5: Solve for x
    x = 285,217,151.49/21,860.61
  6. Step 6: Final answer
    x = 13,047.08

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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.