Home / 20,422.83-30,612.47-11,638.83

Finding the Fourth Proportional to 20,422.83, 30,612.47 and 11,638.83

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Solution

The fourth proportional to 20,422.83, 30,612.47 and 11,638.83 is: 17,445.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.83 : 30,612.47 = 11,638.83 : x
  2. Step 2: Convert to fraction form
    20,422.83/30,612.47 = 11,638.83/x
  3. Step 3: Cross multiply
    20,422.83x = 30,612.47 × 11,638.83
  4. Step 4: Simplify right side
    20,422.83x = 356,293,276.02
  5. Step 5: Solve for x
    x = 356,293,276.02/20,422.83
  6. Step 6: Final answer
    x = 17,445.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.