Home / 21,043.96-31,522.19-9,959.51

Finding the Fourth Proportional to 21,043.96, 31,522.19 and 9,959.51

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Solution

The fourth proportional to 21,043.96, 31,522.19 and 9,959.51 is: 14,918.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.96 : 31,522.19 = 9,959.51 : x
  2. Step 2: Convert to fraction form
    21,043.96/31,522.19 = 9,959.51/x
  3. Step 3: Cross multiply
    21,043.96x = 31,522.19 × 9,959.51
  4. Step 4: Simplify right side
    21,043.96x = 313,945,595.53
  5. Step 5: Solve for x
    x = 313,945,595.53/21,043.96
  6. Step 6: Final answer
    x = 14,918.56

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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.