Home / 19,880.37-27,434.97-10,928.79

Finding the Fourth Proportional to 19,880.37, 27,434.97 and 10,928.79

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Solution

The fourth proportional to 19,880.37, 27,434.97 and 10,928.79 is: 15,081.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.37 : 27,434.97 = 10,928.79 : x
  2. Step 2: Convert to fraction form
    19,880.37/27,434.97 = 10,928.79/x
  3. Step 3: Cross multiply
    19,880.37x = 27,434.97 × 10,928.79
  4. Step 4: Simplify right side
    19,880.37x = 299,831,025.79
  5. Step 5: Solve for x
    x = 299,831,025.79/19,880.37
  6. Step 6: Final answer
    x = 15,081.76

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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.