Home / 20,764.19-28,654.49-11,332.74

Finding the Fourth Proportional to 20,764.19, 28,654.49 and 11,332.74

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Solution

The fourth proportional to 20,764.19, 28,654.49 and 11,332.74 is: 15,639.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.19 : 28,654.49 = 11,332.74 : x
  2. Step 2: Convert to fraction form
    20,764.19/28,654.49 = 11,332.74/x
  3. Step 3: Cross multiply
    20,764.19x = 28,654.49 × 11,332.74
  4. Step 4: Simplify right side
    20,764.19x = 324,733,828.34
  5. Step 5: Solve for x
    x = 324,733,828.34/20,764.19
  6. Step 6: Final answer
    x = 15,639.13

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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.