Home / 20,729.93-28,607.18-11,298.29

Finding the Fourth Proportional to 20,729.93, 28,607.18 and 11,298.29

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Solution

The fourth proportional to 20,729.93, 28,607.18 and 11,298.29 is: 15,591.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.93 : 28,607.18 = 11,298.29 : x
  2. Step 2: Convert to fraction form
    20,729.93/28,607.18 = 11,298.29/x
  3. Step 3: Cross multiply
    20,729.93x = 28,607.18 × 11,298.29
  4. Step 4: Simplify right side
    20,729.93x = 323,212,016.19
  5. Step 5: Solve for x
    x = 323,212,016.19/20,729.93
  6. Step 6: Final answer
    x = 15,591.57

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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.