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Finding the Fourth Proportional to 21,875.71, 32,813.18 and 7,084.65

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Solution

The fourth proportional to 21,875.71, 32,813.18 and 7,084.65 is: 10,626.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,875.71 : 32,813.18 = 7,084.65 : x
  2. Step 2: Convert to fraction form
    21,875.71/32,813.18 = 7,084.65/x
  3. Step 3: Cross multiply
    21,875.71x = 32,813.18 × 7,084.65
  4. Step 4: Simplify right side
    21,875.71x = 232,469,895.69
  5. Step 5: Solve for x
    x = 232,469,895.69/21,875.71
  6. Step 6: Final answer
    x = 10,626.85

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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.