Home / 19,165.52-28,743.96-5,315.60

Finding the Fourth Proportional to 19,165.52, 28,743.96 and 5,315.60

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Solution

The fourth proportional to 19,165.52, 28,743.96 and 5,315.60 is: 7,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.52 : 28,743.96 = 5,315.60 : x
  2. Step 2: Convert to fraction form
    19,165.52/28,743.96 = 5,315.60/x
  3. Step 3: Cross multiply
    19,165.52x = 28,743.96 × 5,315.60
  4. Step 4: Simplify right side
    19,165.52x = 152,791,393.78
  5. Step 5: Solve for x
    x = 152,791,393.78/19,165.52
  6. Step 6: Final answer
    x = 7,972.20

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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.