Home / 20,530.97-28,332.78-11,099.53

Finding the Fourth Proportional to 20,530.97, 28,332.78 and 11,099.53

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Solution

The fourth proportional to 20,530.97, 28,332.78 and 11,099.53 is: 15,317.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.97 : 28,332.78 = 11,099.53 : x
  2. Step 2: Convert to fraction form
    20,530.97/28,332.78 = 11,099.53/x
  3. Step 3: Cross multiply
    20,530.97x = 28,332.78 × 11,099.53
  4. Step 4: Simplify right side
    20,530.97x = 314,480,541.59
  5. Step 5: Solve for x
    x = 314,480,541.59/20,530.97
  6. Step 6: Final answer
    x = 15,317.37

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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.