Home / 20,516.08-28,312.20-11,084.64

Finding the Fourth Proportional to 20,516.08, 28,312.20 and 11,084.64

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Solution

The fourth proportional to 20,516.08, 28,312.20 and 11,084.64 is: 15,296.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.08 : 28,312.20 = 11,084.64 : x
  2. Step 2: Convert to fraction form
    20,516.08/28,312.20 = 11,084.64/x
  3. Step 3: Cross multiply
    20,516.08x = 28,312.20 × 11,084.64
  4. Step 4: Simplify right side
    20,516.08x = 313,830,544.61
  5. Step 5: Solve for x
    x = 313,830,544.61/20,516.08
  6. Step 6: Final answer
    x = 15,296.81

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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.