Home / 21,059.04-31,556.88-15,209.76

Finding the Fourth Proportional to 21,059.04, 31,556.88 and 15,209.76

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Solution

The fourth proportional to 21,059.04, 31,556.88 and 15,209.76 is: 22,791.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.04 : 31,556.88 = 15,209.76 : x
  2. Step 2: Convert to fraction form
    21,059.04/31,556.88 = 15,209.76/x
  3. Step 3: Cross multiply
    21,059.04x = 31,556.88 × 15,209.76
  4. Step 4: Simplify right side
    21,059.04x = 479,972,571.15
  5. Step 5: Solve for x
    x = 479,972,571.15/21,059.04
  6. Step 6: Final answer
    x = 22,791.76

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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.