Home / 21,947.25-30,287.21-12,011.25

Finding the Fourth Proportional to 21,947.25, 30,287.21 and 12,011.25

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Solution

The fourth proportional to 21,947.25, 30,287.21 and 12,011.25 is: 16,575.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.25 : 30,287.21 = 12,011.25 : x
  2. Step 2: Convert to fraction form
    21,947.25/30,287.21 = 12,011.25/x
  3. Step 3: Cross multiply
    21,947.25x = 30,287.21 × 12,011.25
  4. Step 4: Simplify right side
    21,947.25x = 363,787,191.06
  5. Step 5: Solve for x
    x = 363,787,191.06/21,947.25
  6. Step 6: Final answer
    x = 16,575.53

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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.