Home / 21,011.58-29,000.88-13,059.78

Finding the Fourth Proportional to 21,011.58, 29,000.88 and 13,059.78

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Solution

The fourth proportional to 21,011.58, 29,000.88 and 13,059.78 is: 18,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.58 : 29,000.88 = 13,059.78 : x
  2. Step 2: Convert to fraction form
    21,011.58/29,000.88 = 13,059.78/x
  3. Step 3: Cross multiply
    21,011.58x = 29,000.88 × 13,059.78
  4. Step 4: Simplify right side
    21,011.58x = 378,745,112.61
  5. Step 5: Solve for x
    x = 378,745,112.61/21,011.58
  6. Step 6: Final answer
    x = 18,025.54

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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.