Home / 20,535.21-28,338.55-11,582.69

Finding the Fourth Proportional to 20,535.21, 28,338.55 and 11,582.69

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Solution

The fourth proportional to 20,535.21, 28,338.55 and 11,582.69 is: 15,984.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.21 : 28,338.55 = 11,582.69 : x
  2. Step 2: Convert to fraction form
    20,535.21/28,338.55 = 11,582.69/x
  3. Step 3: Cross multiply
    20,535.21x = 28,338.55 × 11,582.69
  4. Step 4: Simplify right side
    20,535.21x = 328,236,639.70
  5. Step 5: Solve for x
    x = 328,236,639.70/20,535.21
  6. Step 6: Final answer
    x = 15,984.09

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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.