Home / 19,128.54-28,679.04-9,646.78

Finding the Fourth Proportional to 19,128.54, 28,679.04 and 9,646.78

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Solution

The fourth proportional to 19,128.54, 28,679.04 and 9,646.78 is: 14,463.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.54 : 28,679.04 = 9,646.78 : x
  2. Step 2: Convert to fraction form
    19,128.54/28,679.04 = 9,646.78/x
  3. Step 3: Cross multiply
    19,128.54x = 28,679.04 × 9,646.78
  4. Step 4: Simplify right side
    19,128.54x = 276,660,389.49
  5. Step 5: Solve for x
    x = 276,660,389.49/19,128.54
  6. Step 6: Final answer
    x = 14,463.23

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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.