Home / 20,695.55-28,559.81-11,264.09

Finding the Fourth Proportional to 20,695.55, 28,559.81 and 11,264.09

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Solution

The fourth proportional to 20,695.55, 28,559.81 and 11,264.09 is: 15,544.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.55 : 28,559.81 = 11,264.09 : x
  2. Step 2: Convert to fraction form
    20,695.55/28,559.81 = 11,264.09/x
  3. Step 3: Cross multiply
    20,695.55x = 28,559.81 × 11,264.09
  4. Step 4: Simplify right side
    20,695.55x = 321,700,155.58
  5. Step 5: Solve for x
    x = 321,700,155.58/20,695.55
  6. Step 6: Final answer
    x = 15,544.42

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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.