Home / 19,209.71-28,812.16-5,169.17

Finding the Fourth Proportional to 19,209.71, 28,812.16 and 5,169.17

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Solution

The fourth proportional to 19,209.71, 28,812.16 and 5,169.17 is: 7,753.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.71 : 28,812.16 = 5,169.17 : x
  2. Step 2: Convert to fraction form
    19,209.71/28,812.16 = 5,169.17/x
  3. Step 3: Cross multiply
    19,209.71x = 28,812.16 × 5,169.17
  4. Step 4: Simplify right side
    19,209.71x = 148,934,840.45
  5. Step 5: Solve for x
    x = 148,934,840.45/19,209.71
  6. Step 6: Final answer
    x = 7,753.10

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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.