Home / 15,871.05-21,903.36-8,799.75

Finding the Fourth Proportional to 15,871.05, 21,903.36 and 8,799.75

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Solution

The fourth proportional to 15,871.05, 21,903.36 and 8,799.75 is: 12,144.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,871.05 : 21,903.36 = 8,799.75 : x
  2. Step 2: Convert to fraction form
    15,871.05/21,903.36 = 8,799.75/x
  3. Step 3: Cross multiply
    15,871.05x = 21,903.36 × 8,799.75
  4. Step 4: Simplify right side
    15,871.05x = 192,744,092.16
  5. Step 5: Solve for x
    x = 192,744,092.16/15,871.05
  6. Step 6: Final answer
    x = 12,144.38

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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.