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Finding the Fourth Proportional to 13,206.66, 19,796.66 and 8,279.76

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Solution

The fourth proportional to 13,206.66, 19,796.66 and 8,279.76 is: 12,411.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.66 : 19,796.66 = 8,279.76 : x
  2. Step 2: Convert to fraction form
    13,206.66/19,796.66 = 8,279.76/x
  3. Step 3: Cross multiply
    13,206.66x = 19,796.66 × 8,279.76
  4. Step 4: Simplify right side
    13,206.66x = 163,911,552.20
  5. Step 5: Solve for x
    x = 163,911,552.20/13,206.66
  6. Step 6: Final answer
    x = 12,411.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.