Home / 15,872.50-21,904.05-8,799.38

Finding the Fourth Proportional to 15,872.50, 21,904.05 and 8,799.38

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Solution

The fourth proportional to 15,872.50, 21,904.05 and 8,799.38 is: 12,143.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,872.50 : 21,904.05 = 8,799.38 : x
  2. Step 2: Convert to fraction form
    15,872.50/21,904.05 = 8,799.38/x
  3. Step 3: Cross multiply
    15,872.50x = 21,904.05 × 8,799.38
  4. Step 4: Simplify right side
    15,872.50x = 192,742,059.49
  5. Step 5: Solve for x
    x = 192,742,059.49/15,872.50
  6. Step 6: Final answer
    x = 12,143.14

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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.