Home / 23,150.40-31,947.36-12,540

Finding the Fourth Proportional to 23,150.40, 31,947.36 and 12,540

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Solution

The fourth proportional to 23,150.40, 31,947.36 and 12,540 is: 17,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,150.40 : 31,947.36 = 12,540 : x
  2. Step 2: Convert to fraction form
    23,150.40/31,947.36 = 12,540/x
  3. Step 3: Cross multiply
    23,150.40x = 31,947.36 × 12,540
  4. Step 4: Simplify right side
    23,150.40x = 400,619,894.40
  5. Step 5: Solve for x
    x = 400,619,894.40/23,150.40
  6. Step 6: Final answer
    x = 17,305.10

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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.