Home / 18,972.57-28,460.24-7,285.79

Finding the Fourth Proportional to 18,972.57, 28,460.24 and 7,285.79

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Solution

The fourth proportional to 18,972.57, 28,460.24 and 7,285.79 is: 10,929.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.57 : 28,460.24 = 7,285.79 : x
  2. Step 2: Convert to fraction form
    18,972.57/28,460.24 = 7,285.79/x
  3. Step 3: Cross multiply
    18,972.57x = 28,460.24 × 7,285.79
  4. Step 4: Simplify right side
    18,972.57x = 207,355,331.99
  5. Step 5: Solve for x
    x = 207,355,331.99/18,972.57
  6. Step 6: Final answer
    x = 10,929.22

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1.5x scale

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.