Home / 20,930.26-28,883.98-11,370.24

Finding the Fourth Proportional to 20,930.26, 28,883.98 and 11,370.24

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Solution

The fourth proportional to 20,930.26, 28,883.98 and 11,370.24 is: 15,691.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.26 : 28,883.98 = 11,370.24 : x
  2. Step 2: Convert to fraction form
    20,930.26/28,883.98 = 11,370.24/x
  3. Step 3: Cross multiply
    20,930.26x = 28,883.98 × 11,370.24
  4. Step 4: Simplify right side
    20,930.26x = 328,417,784.76
  5. Step 5: Solve for x
    x = 328,417,784.76/20,930.26
  6. Step 6: Final answer
    x = 15,691.05

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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.