Home / 19,128.78-28,690.34-10,233.16

Finding the Fourth Proportional to 19,128.78, 28,690.34 and 10,233.16

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Solution

The fourth proportional to 19,128.78, 28,690.34 and 10,233.16 is: 15,348.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.78 : 28,690.34 = 10,233.16 : x
  2. Step 2: Convert to fraction form
    19,128.78/28,690.34 = 10,233.16/x
  3. Step 3: Cross multiply
    19,128.78x = 28,690.34 × 10,233.16
  4. Step 4: Simplify right side
    19,128.78x = 293,592,716.78
  5. Step 5: Solve for x
    x = 293,592,716.78/19,128.78
  6. Step 6: Final answer
    x = 15,348.22

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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.