Home / 15,886.20-21,923.82-9,171.84

Finding the Fourth Proportional to 15,886.20, 21,923.82 and 9,171.84

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Solution

The fourth proportional to 15,886.20, 21,923.82 and 9,171.84 is: 12,657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,886.20 : 21,923.82 = 9,171.84 : x
  2. Step 2: Convert to fraction form
    15,886.20/21,923.82 = 9,171.84/x
  3. Step 3: Cross multiply
    15,886.20x = 21,923.82 × 9,171.84
  4. Step 4: Simplify right side
    15,886.20x = 201,081,769.23
  5. Step 5: Solve for x
    x = 201,081,769.23/15,886.20
  6. Step 6: Final answer
    x = 12,657.64

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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.