Home / 19,880.40-27,434.46-10,805.48

Finding the Fourth Proportional to 19,880.40, 27,434.46 and 10,805.48

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Solution

The fourth proportional to 19,880.40, 27,434.46 and 10,805.48 is: 14,911.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.40 : 27,434.46 = 10,805.48 : x
  2. Step 2: Convert to fraction form
    19,880.40/27,434.46 = 10,805.48/x
  3. Step 3: Cross multiply
    19,880.40x = 27,434.46 × 10,805.48
  4. Step 4: Simplify right side
    19,880.40x = 296,442,508.84
  5. Step 5: Solve for x
    x = 296,442,508.84/19,880.40
  6. Step 6: Final answer
    x = 14,911.29

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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.