Home / 28,002.58-42,010.02-20,584.55

Finding the Fourth Proportional to 28,002.58, 42,010.02 and 20,584.55

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Solution

The fourth proportional to 28,002.58, 42,010.02 and 20,584.55 is: 30,881.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.58 : 42,010.02 = 20,584.55 : x
  2. Step 2: Convert to fraction form
    28,002.58/42,010.02 = 20,584.55/x
  3. Step 3: Cross multiply
    28,002.58x = 42,010.02 × 20,584.55
  4. Step 4: Simplify right side
    28,002.58x = 864,757,357.19
  5. Step 5: Solve for x
    x = 864,757,357.19/28,002.58
  6. Step 6: Final answer
    x = 30,881.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.