Home / 18,939.52-28,409.36-5,088.48

Finding the Fourth Proportional to 18,939.52, 28,409.36 and 5,088.48

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Solution

The fourth proportional to 18,939.52, 28,409.36 and 5,088.48 is: 7,632.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.52 : 28,409.36 = 5,088.48 : x
  2. Step 2: Convert to fraction form
    18,939.52/28,409.36 = 5,088.48/x
  3. Step 3: Cross multiply
    18,939.52x = 28,409.36 × 5,088.48
  4. Step 4: Simplify right side
    18,939.52x = 144,560,460.17
  5. Step 5: Solve for x
    x = 144,560,460.17/18,939.52
  6. Step 6: Final answer
    x = 7,632.74

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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.