Home / 20,948.47-28,908.15-11,516.96

Finding the Fourth Proportional to 20,948.47, 28,908.15 and 11,516.96

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Solution

The fourth proportional to 20,948.47, 28,908.15 and 11,516.96 is: 15,893.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.47 : 28,908.15 = 11,516.96 : x
  2. Step 2: Convert to fraction form
    20,948.47/28,908.15 = 11,516.96/x
  3. Step 3: Cross multiply
    20,948.47x = 28,908.15 × 11,516.96
  4. Step 4: Simplify right side
    20,948.47x = 332,934,007.22
  5. Step 5: Solve for x
    x = 332,934,007.22/20,948.47
  6. Step 6: Final answer
    x = 15,893.00

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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.