Home / 21,219.52-29,277.84-12,265.60

Finding the Fourth Proportional to 21,219.52, 29,277.84 and 12,265.60

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Solution

The fourth proportional to 21,219.52, 29,277.84 and 12,265.60 is: 16,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.52 : 29,277.84 = 12,265.60 : x
  2. Step 2: Convert to fraction form
    21,219.52/29,277.84 = 12,265.60/x
  3. Step 3: Cross multiply
    21,219.52x = 29,277.84 × 12,265.60
  4. Step 4: Simplify right side
    21,219.52x = 359,110,274.30
  5. Step 5: Solve for x
    x = 359,110,274.30/21,219.52
  6. Step 6: Final answer
    x = 16,923.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.