Home / 20,566.71-28,380.45-11,615.10

Finding the Fourth Proportional to 20,566.71, 28,380.45 and 11,615.10

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Solution

The fourth proportional to 20,566.71, 28,380.45 and 11,615.10 is: 16,027.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.71 : 28,380.45 = 11,615.10 : x
  2. Step 2: Convert to fraction form
    20,566.71/28,380.45 = 11,615.10/x
  3. Step 3: Cross multiply
    20,566.71x = 28,380.45 × 11,615.10
  4. Step 4: Simplify right side
    20,566.71x = 329,641,706.72
  5. Step 5: Solve for x
    x = 329,641,706.72/20,566.71
  6. Step 6: Final answer
    x = 16,027.93

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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.