Home / 13,206.61-19,796.56-8,279.71

Finding the Fourth Proportional to 13,206.61, 19,796.56 and 8,279.71

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Solution

The fourth proportional to 13,206.61, 19,796.56 and 8,279.71 is: 12,411.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.61 : 19,796.56 = 8,279.71 : x
  2. Step 2: Convert to fraction form
    13,206.61/19,796.56 = 8,279.71/x
  3. Step 3: Cross multiply
    13,206.61x = 19,796.56 × 8,279.71
  4. Step 4: Simplify right side
    13,206.61x = 163,909,775.80
  5. Step 5: Solve for x
    x = 163,909,775.80/13,206.61
  6. Step 6: Final answer
    x = 12,411.19

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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.