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Finding the Fourth Proportional to 15,106.98, 20,846.49 and 8,392.04

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Solution

The fourth proportional to 15,106.98, 20,846.49 and 8,392.04 is: 11,580.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.98 : 20,846.49 = 8,392.04 : x
  2. Step 2: Convert to fraction form
    15,106.98/20,846.49 = 8,392.04/x
  3. Step 3: Cross multiply
    15,106.98x = 20,846.49 × 8,392.04
  4. Step 4: Simplify right side
    15,106.98x = 174,944,473.71
  5. Step 5: Solve for x
    x = 174,944,473.71/15,106.98
  6. Step 6: Final answer
    x = 11,580.37

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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.