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Finding the Fourth Proportional to 15,626.99, 21,560.99 and 8,910.17

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Solution

The fourth proportional to 15,626.99, 21,560.99 and 8,910.17 is: 12,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,626.99 : 21,560.99 = 8,910.17 : x
  2. Step 2: Convert to fraction form
    15,626.99/21,560.99 = 8,910.17/x
  3. Step 3: Cross multiply
    15,626.99x = 21,560.99 × 8,910.17
  4. Step 4: Simplify right side
    15,626.99x = 192,112,014.77
  5. Step 5: Solve for x
    x = 192,112,014.77/15,626.99
  6. Step 6: Final answer
    x = 12,293.60

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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.