Home / 19,947.39-27,520.67-12,391.04

Finding the Fourth Proportional to 19,947.39, 27,520.67 and 12,391.04

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Solution

The fourth proportional to 19,947.39, 27,520.67 and 12,391.04 is: 17,095.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.39 : 27,520.67 = 12,391.04 : x
  2. Step 2: Convert to fraction form
    19,947.39/27,520.67 = 12,391.04/x
  3. Step 3: Cross multiply
    19,947.39x = 27,520.67 × 12,391.04
  4. Step 4: Simplify right side
    19,947.39x = 341,009,722.80
  5. Step 5: Solve for x
    x = 341,009,722.80/19,947.39
  6. Step 6: Final answer
    x = 17,095.46

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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.