Home / 21,289.64-29,364.54-14,575.55

Finding the Fourth Proportional to 21,289.64, 29,364.54 and 14,575.55

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Solution

The fourth proportional to 21,289.64, 29,364.54 and 14,575.55 is: 20,103.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.64 : 29,364.54 = 14,575.55 : x
  2. Step 2: Convert to fraction form
    21,289.64/29,364.54 = 14,575.55/x
  3. Step 3: Cross multiply
    21,289.64x = 29,364.54 × 14,575.55
  4. Step 4: Simplify right side
    21,289.64x = 428,004,321.00
  5. Step 5: Solve for x
    x = 428,004,321.00/21,289.64
  6. Step 6: Final answer
    x = 20,103.88

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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.