Home / 20,733.52-28,612.56-12,771.22

Finding the Fourth Proportional to 20,733.52, 28,612.56 and 12,771.22

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Solution

The fourth proportional to 20,733.52, 28,612.56 and 12,771.22 is: 17,624.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.52 : 28,612.56 = 12,771.22 : x
  2. Step 2: Convert to fraction form
    20,733.52/28,612.56 = 12,771.22/x
  3. Step 3: Cross multiply
    20,733.52x = 28,612.56 × 12,771.22
  4. Step 4: Simplify right side
    20,733.52x = 365,417,298.52
  5. Step 5: Solve for x
    x = 365,417,298.52/20,733.52
  6. Step 6: Final answer
    x = 17,624.47

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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.