Home / 13,947.70-20,921.55-13,267.30

Finding the Fourth Proportional to 13,947.70, 20,921.55 and 13,267.30

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Solution

The fourth proportional to 13,947.70, 20,921.55 and 13,267.30 is: 19,900.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.70 : 20,921.55 = 13,267.30 : x
  2. Step 2: Convert to fraction form
    13,947.70/20,921.55 = 13,267.30/x
  3. Step 3: Cross multiply
    13,947.70x = 20,921.55 × 13,267.30
  4. Step 4: Simplify right side
    13,947.70x = 277,572,480.32
  5. Step 5: Solve for x
    x = 277,572,480.32/13,947.70
  6. Step 6: Final answer
    x = 19,900.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.