Home / 28,784.80-39,721.68-19,351.84

Finding the Fourth Proportional to 28,784.80, 39,721.68 and 19,351.84

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Solution

The fourth proportional to 28,784.80, 39,721.68 and 19,351.84 is: 26,704.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,784.80 : 39,721.68 = 19,351.84 : x
  2. Step 2: Convert to fraction form
    28,784.80/39,721.68 = 19,351.84/x
  3. Step 3: Cross multiply
    28,784.80x = 39,721.68 × 19,351.84
  4. Step 4: Simplify right side
    28,784.80x = 768,687,595.89
  5. Step 5: Solve for x
    x = 768,687,595.89/28,784.80
  6. Step 6: Final answer
    x = 26,704.64

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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.