Home / 20,852.34-28,778.27-11,901.18

Finding the Fourth Proportional to 20,852.34, 28,778.27 and 11,901.18

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Solution

The fourth proportional to 20,852.34, 28,778.27 and 11,901.18 is: 16,424.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.34 : 28,778.27 = 11,901.18 : x
  2. Step 2: Convert to fraction form
    20,852.34/28,778.27 = 11,901.18/x
  3. Step 3: Cross multiply
    20,852.34x = 28,778.27 × 11,901.18
  4. Step 4: Simplify right side
    20,852.34x = 342,495,324.84
  5. Step 5: Solve for x
    x = 342,495,324.84/20,852.34
  6. Step 6: Final answer
    x = 16,424.79

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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.