Home / 20,530.88-28,332.60-11,099.45

Finding the Fourth Proportional to 20,530.88, 28,332.60 and 11,099.45

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Solution

The fourth proportional to 20,530.88, 28,332.60 and 11,099.45 is: 15,317.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.88 : 28,332.60 = 11,099.45 : x
  2. Step 2: Convert to fraction form
    20,530.88/28,332.60 = 11,099.45/x
  3. Step 3: Cross multiply
    20,530.88x = 28,332.60 × 11,099.45
  4. Step 4: Simplify right side
    20,530.88x = 314,476,277.07
  5. Step 5: Solve for x
    x = 314,476,277.07/20,530.88
  6. Step 6: Final answer
    x = 15,317.23

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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.