Home / 21,060.60-29,063.61-12,109.85

Finding the Fourth Proportional to 21,060.60, 29,063.61 and 12,109.85

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Solution

The fourth proportional to 21,060.60, 29,063.61 and 12,109.85 is: 16,711.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.60 : 29,063.61 = 12,109.85 : x
  2. Step 2: Convert to fraction form
    21,060.60/29,063.61 = 12,109.85/x
  3. Step 3: Cross multiply
    21,060.60x = 29,063.61 × 12,109.85
  4. Step 4: Simplify right side
    21,060.60x = 351,955,812.24
  5. Step 5: Solve for x
    x = 351,955,812.24/21,060.60
  6. Step 6: Final answer
    x = 16,711.58

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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.