Home / 19,013.60-28,520.40-5,162.60

Finding the Fourth Proportional to 19,013.60, 28,520.40 and 5,162.60

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Solution

The fourth proportional to 19,013.60, 28,520.40 and 5,162.60 is: 7,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,013.60 : 28,520.40 = 5,162.60 : x
  2. Step 2: Convert to fraction form
    19,013.60/28,520.40 = 5,162.60/x
  3. Step 3: Cross multiply
    19,013.60x = 28,520.40 × 5,162.60
  4. Step 4: Simplify right side
    19,013.60x = 147,239,417.04
  5. Step 5: Solve for x
    x = 147,239,417.04/19,013.60
  6. Step 6: Final answer
    x = 7,743.90

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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.