Home / 21,256.35-31,883.48-7,928.31

Finding the Fourth Proportional to 21,256.35, 31,883.48 and 7,928.31

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Solution

The fourth proportional to 21,256.35, 31,883.48 and 7,928.31 is: 11,892.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256.35 : 31,883.48 = 7,928.31 : x
  2. Step 2: Convert to fraction form
    21,256.35/31,883.48 = 7,928.31/x
  3. Step 3: Cross multiply
    21,256.35x = 31,883.48 × 7,928.31
  4. Step 4: Simplify right side
    21,256.35x = 252,782,161.29
  5. Step 5: Solve for x
    x = 252,782,161.29/21,256.35
  6. Step 6: Final answer
    x = 11,892.08

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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.