Home / 19,223.40-28,819.10-8,138.60

Finding the Fourth Proportional to 19,223.40, 28,819.10 and 8,138.60

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Solution

The fourth proportional to 19,223.40, 28,819.10 and 8,138.60 is: 12,201.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,223.40 : 28,819.10 = 8,138.60 : x
  2. Step 2: Convert to fraction form
    19,223.40/28,819.10 = 8,138.60/x
  3. Step 3: Cross multiply
    19,223.40x = 28,819.10 × 8,138.60
  4. Step 4: Simplify right side
    19,223.40x = 234,547,127.26
  5. Step 5: Solve for x
    x = 234,547,127.26/19,223.40
  6. Step 6: Final answer
    x = 12,201.13

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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.