Home / 21,928.50-32,900.98-13,169.70

Finding the Fourth Proportional to 21,928.50, 32,900.98 and 13,169.70

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Solution

The fourth proportional to 21,928.50, 32,900.98 and 13,169.70 is: 19,759.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.50 : 32,900.98 = 13,169.70 : x
  2. Step 2: Convert to fraction form
    21,928.50/32,900.98 = 13,169.70/x
  3. Step 3: Cross multiply
    21,928.50x = 32,900.98 × 13,169.70
  4. Step 4: Simplify right side
    21,928.50x = 433,296,036.31
  5. Step 5: Solve for x
    x = 433,296,036.31/21,928.50
  6. Step 6: Final answer
    x = 19,759.49

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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.