Home / 15,564.27-21,478.60-8,849.90

Finding the Fourth Proportional to 15,564.27, 21,478.60 and 8,849.90

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Solution

The fourth proportional to 15,564.27, 21,478.60 and 8,849.90 is: 12,212.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,564.27 : 21,478.60 = 8,849.90 : x
  2. Step 2: Convert to fraction form
    15,564.27/21,478.60 = 8,849.90/x
  3. Step 3: Cross multiply
    15,564.27x = 21,478.60 × 8,849.90
  4. Step 4: Simplify right side
    15,564.27x = 190,083,433.30
  5. Step 5: Solve for x
    x = 190,083,433.30/15,564.27
  6. Step 6: Final answer
    x = 12,212.81

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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.