Home / 21,364.73-29,484.46-12,869.52

Finding the Fourth Proportional to 21,364.73, 29,484.46 and 12,869.52

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Solution

The fourth proportional to 21,364.73, 29,484.46 and 12,869.52 is: 17,760.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,364.73 : 29,484.46 = 12,869.52 : x
  2. Step 2: Convert to fraction form
    21,364.73/29,484.46 = 12,869.52/x
  3. Step 3: Cross multiply
    21,364.73x = 29,484.46 × 12,869.52
  4. Step 4: Simplify right side
    21,364.73x = 379,450,847.66
  5. Step 5: Solve for x
    x = 379,450,847.66/21,364.73
  6. Step 6: Final answer
    x = 17,760.62

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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.