Home / 19,138.07-28,674.30-15,201.47

Finding the Fourth Proportional to 19,138.07, 28,674.30 and 15,201.47

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Solution

The fourth proportional to 19,138.07, 28,674.30 and 15,201.47 is: 22,776.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.07 : 28,674.30 = 15,201.47 : x
  2. Step 2: Convert to fraction form
    19,138.07/28,674.30 = 15,201.47/x
  3. Step 3: Cross multiply
    19,138.07x = 28,674.30 × 15,201.47
  4. Step 4: Simplify right side
    19,138.07x = 435,891,639.91
  5. Step 5: Solve for x
    x = 435,891,639.91/19,138.07
  6. Step 6: Final answer
    x = 22,776.15

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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.