Home / 19,138.17-28,707.79-5,287.17

Finding the Fourth Proportional to 19,138.17, 28,707.79 and 5,287.17

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Solution

The fourth proportional to 19,138.17, 28,707.79 and 5,287.17 is: 7,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.17 : 28,707.79 = 5,287.17 : x
  2. Step 2: Convert to fraction form
    19,138.17/28,707.79 = 5,287.17/x
  3. Step 3: Cross multiply
    19,138.17x = 28,707.79 × 5,287.17
  4. Step 4: Simplify right side
    19,138.17x = 151,782,809.30
  5. Step 5: Solve for x
    x = 151,782,809.30/19,138.17
  6. Step 6: Final answer
    x = 7,930.90

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1.5x scale

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.