Home / 21,257.40-32,010.14-15,749.78

Finding the Fourth Proportional to 21,257.40, 32,010.14 and 15,749.78

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Solution

The fourth proportional to 21,257.40, 32,010.14 and 15,749.78 is: 23,716.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.40 : 32,010.14 = 15,749.78 : x
  2. Step 2: Convert to fraction form
    21,257.40/32,010.14 = 15,749.78/x
  3. Step 3: Cross multiply
    21,257.40x = 32,010.14 × 15,749.78
  4. Step 4: Simplify right side
    21,257.40x = 504,152,662.77
  5. Step 5: Solve for x
    x = 504,152,662.77/21,257.40
  6. Step 6: Final answer
    x = 23,716.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.