Home / 20,530.59-28,332.26-11,099.15

Finding the Fourth Proportional to 20,530.59, 28,332.26 and 11,099.15

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Solution

The fourth proportional to 20,530.59, 28,332.26 and 11,099.15 is: 15,316.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.59 : 28,332.26 = 11,099.15 : x
  2. Step 2: Convert to fraction form
    20,530.59/28,332.26 = 11,099.15/x
  3. Step 3: Cross multiply
    20,530.59x = 28,332.26 × 11,099.15
  4. Step 4: Simplify right side
    20,530.59x = 314,464,003.58
  5. Step 5: Solve for x
    x = 314,464,003.58/20,530.59
  6. Step 6: Final answer
    x = 15,316.85

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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.