Home / 20,695.80-28,560.06-11,264.34

Finding the Fourth Proportional to 20,695.80, 28,560.06 and 11,264.34

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Solution

The fourth proportional to 20,695.80, 28,560.06 and 11,264.34 is: 15,544.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.80 : 28,560.06 = 11,264.34 : x
  2. Step 2: Convert to fraction form
    20,695.80/28,560.06 = 11,264.34/x
  3. Step 3: Cross multiply
    20,695.80x = 28,560.06 × 11,264.34
  4. Step 4: Simplify right side
    20,695.80x = 321,710,226.26
  5. Step 5: Solve for x
    x = 321,710,226.26/20,695.80
  6. Step 6: Final answer
    x = 15,544.71

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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.