Home / 18,970.43-28,456.16-4,930.14

Finding the Fourth Proportional to 18,970.43, 28,456.16 and 4,930.14

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Solution

The fourth proportional to 18,970.43, 28,456.16 and 4,930.14 is: 7,395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.43 : 28,456.16 = 4,930.14 : x
  2. Step 2: Convert to fraction form
    18,970.43/28,456.16 = 4,930.14/x
  3. Step 3: Cross multiply
    18,970.43x = 28,456.16 × 4,930.14
  4. Step 4: Simplify right side
    18,970.43x = 140,292,828.01
  5. Step 5: Solve for x
    x = 140,292,828.01/18,970.43
  6. Step 6: Final answer
    x = 7,395.34

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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.