Home / 21,869.95-32,785.40-8,539.85

Finding the Fourth Proportional to 21,869.95, 32,785.40 and 8,539.85

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Solution

The fourth proportional to 21,869.95, 32,785.40 and 8,539.85 is: 12,802.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.95 : 32,785.40 = 8,539.85 : x
  2. Step 2: Convert to fraction form
    21,869.95/32,785.40 = 8,539.85/x
  3. Step 3: Cross multiply
    21,869.95x = 32,785.40 × 8,539.85
  4. Step 4: Simplify right side
    21,869.95x = 279,982,191.56
  5. Step 5: Solve for x
    x = 279,982,191.56/21,869.95
  6. Step 6: Final answer
    x = 12,802.14

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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.