Home / 21,236.17-31,858.10-8,749.25

Finding the Fourth Proportional to 21,236.17, 31,858.10 and 8,749.25

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Solution

The fourth proportional to 21,236.17, 31,858.10 and 8,749.25 is: 13,125.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.17 : 31,858.10 = 8,749.25 : x
  2. Step 2: Convert to fraction form
    21,236.17/31,858.10 = 8,749.25/x
  3. Step 3: Cross multiply
    21,236.17x = 31,858.10 × 8,749.25
  4. Step 4: Simplify right side
    21,236.17x = 278,734,437.68
  5. Step 5: Solve for x
    x = 278,734,437.68/21,236.17
  6. Step 6: Final answer
    x = 13,125.46

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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.