Home / 20,488.43-28,274.93-11,535.93

Finding the Fourth Proportional to 20,488.43, 28,274.93 and 11,535.93

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Solution

The fourth proportional to 20,488.43, 28,274.93 and 11,535.93 is: 15,920.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.43 : 28,274.93 = 11,535.93 : x
  2. Step 2: Convert to fraction form
    20,488.43/28,274.93 = 11,535.93/x
  3. Step 3: Cross multiply
    20,488.43x = 28,274.93 × 11,535.93
  4. Step 4: Simplify right side
    20,488.43x = 326,177,646.69
  5. Step 5: Solve for x
    x = 326,177,646.69/20,488.43
  6. Step 6: Final answer
    x = 15,920.09

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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.