Home / 19,880.38-27,434.98-10,928.80

Finding the Fourth Proportional to 19,880.38, 27,434.98 and 10,928.80

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Solution

The fourth proportional to 19,880.38, 27,434.98 and 10,928.80 is: 15,081.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.38 : 27,434.98 = 10,928.80 : x
  2. Step 2: Convert to fraction form
    19,880.38/27,434.98 = 10,928.80/x
  3. Step 3: Cross multiply
    19,880.38x = 27,434.98 × 10,928.80
  4. Step 4: Simplify right side
    19,880.38x = 299,831,409.42
  5. Step 5: Solve for x
    x = 299,831,409.42/19,880.38
  6. Step 6: Final answer
    x = 15,081.77

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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.