Home / 20,948.07-28,907.13-11,516.64

Finding the Fourth Proportional to 20,948.07, 28,907.13 and 11,516.64

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Solution

The fourth proportional to 20,948.07, 28,907.13 and 11,516.64 is: 15,892.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.07 : 28,907.13 = 11,516.64 : x
  2. Step 2: Convert to fraction form
    20,948.07/28,907.13 = 11,516.64/x
  3. Step 3: Cross multiply
    20,948.07x = 28,907.13 × 11,516.64
  4. Step 4: Simplify right side
    20,948.07x = 332,913,009.64
  5. Step 5: Solve for x
    x = 332,913,009.64/20,948.07
  6. Step 6: Final answer
    x = 15,892.30

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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.