Home / 20,888.06-28,826.84-11,456.63

Finding the Fourth Proportional to 20,888.06, 28,826.84 and 11,456.63

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Solution

The fourth proportional to 20,888.06, 28,826.84 and 11,456.63 is: 15,810.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.06 : 28,826.84 = 11,456.63 : x
  2. Step 2: Convert to fraction form
    20,888.06/28,826.84 = 11,456.63/x
  3. Step 3: Cross multiply
    20,888.06x = 28,826.84 × 11,456.63
  4. Step 4: Simplify right side
    20,888.06x = 330,258,439.95
  5. Step 5: Solve for x
    x = 330,258,439.95/20,888.06
  6. Step 6: Final answer
    x = 15,810.87

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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.