Home / 21,701.92-29,949.50-12,749.35

Finding the Fourth Proportional to 21,701.92, 29,949.50 and 12,749.35

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Solution

The fourth proportional to 21,701.92, 29,949.50 and 12,749.35 is: 17,594.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,701.92 : 29,949.50 = 12,749.35 : x
  2. Step 2: Convert to fraction form
    21,701.92/29,949.50 = 12,749.35/x
  3. Step 3: Cross multiply
    21,701.92x = 29,949.50 × 12,749.35
  4. Step 4: Simplify right side
    21,701.92x = 381,836,657.83
  5. Step 5: Solve for x
    x = 381,836,657.83/21,701.92
  6. Step 6: Final answer
    x = 17,594.60

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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.