Home / 15,161.98-20,923.59-8,789.81

Finding the Fourth Proportional to 15,161.98, 20,923.59 and 8,789.81

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Solution

The fourth proportional to 15,161.98, 20,923.59 and 8,789.81 is: 12,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,161.98 : 20,923.59 = 8,789.81 : x
  2. Step 2: Convert to fraction form
    15,161.98/20,923.59 = 8,789.81/x
  3. Step 3: Cross multiply
    15,161.98x = 20,923.59 × 8,789.81
  4. Step 4: Simplify right side
    15,161.98x = 183,914,276.00
  5. Step 5: Solve for x
    x = 183,914,276.00/15,161.98
  6. Step 6: Final answer
    x = 12,129.97

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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.