Home / 10,518.49-15,777.73-3,122.95

Finding the Fourth Proportional to 10,518.49, 15,777.73 and 3,122.95

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Solution

The fourth proportional to 10,518.49, 15,777.73 and 3,122.95 is: 4,684.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.49 : 15,777.73 = 3,122.95 : x
  2. Step 2: Convert to fraction form
    10,518.49/15,777.73 = 3,122.95/x
  3. Step 3: Cross multiply
    10,518.49x = 15,777.73 × 3,122.95
  4. Step 4: Simplify right side
    10,518.49x = 49,272,983.01
  5. Step 5: Solve for x
    x = 49,272,983.01/10,518.49
  6. Step 6: Final answer
    x = 4,684.42

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Double scale
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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.