Home / 20,883.72-28,819.02-11,323.08

Finding the Fourth Proportional to 20,883.72, 28,819.02 and 11,323.08

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Solution

The fourth proportional to 20,883.72, 28,819.02 and 11,323.08 is: 15,625.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.72 : 28,819.02 = 11,323.08 : x
  2. Step 2: Convert to fraction form
    20,883.72/28,819.02 = 11,323.08/x
  3. Step 3: Cross multiply
    20,883.72x = 28,819.02 × 11,323.08
  4. Step 4: Simplify right side
    20,883.72x = 326,320,068.98
  5. Step 5: Solve for x
    x = 326,320,068.98/20,883.72
  6. Step 6: Final answer
    x = 15,625.57

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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.