Home / 19,169.02-28,750.20-5,314.78

Finding the Fourth Proportional to 19,169.02, 28,750.20 and 5,314.78

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Solution

The fourth proportional to 19,169.02, 28,750.20 and 5,314.78 is: 7,971.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,169.02 : 28,750.20 = 5,314.78 : x
  2. Step 2: Convert to fraction form
    19,169.02/28,750.20 = 5,314.78/x
  3. Step 3: Cross multiply
    19,169.02x = 28,750.20 × 5,314.78
  4. Step 4: Simplify right side
    19,169.02x = 152,800,987.96
  5. Step 5: Solve for x
    x = 152,800,987.96/19,169.02
  6. Step 6: Final answer
    x = 7,971.25

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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.