Home / 19,839.56-27,378.93-10,887.90

Finding the Fourth Proportional to 19,839.56, 27,378.93 and 10,887.90

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Solution

The fourth proportional to 19,839.56, 27,378.93 and 10,887.90 is: 15,025.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,839.56 : 27,378.93 = 10,887.90 : x
  2. Step 2: Convert to fraction form
    19,839.56/27,378.93 = 10,887.90/x
  3. Step 3: Cross multiply
    19,839.56x = 27,378.93 × 10,887.90
  4. Step 4: Simplify right side
    19,839.56x = 298,099,082.53
  5. Step 5: Solve for x
    x = 298,099,082.53/19,839.56
  6. Step 6: Final answer
    x = 15,025.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.