Home / 15,939.51-21,994.99-8,769.34

Finding the Fourth Proportional to 15,939.51, 21,994.99 and 8,769.34

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Solution

The fourth proportional to 15,939.51, 21,994.99 and 8,769.34 is: 12,100.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.51 : 21,994.99 = 8,769.34 : x
  2. Step 2: Convert to fraction form
    15,939.51/21,994.99 = 8,769.34/x
  3. Step 3: Cross multiply
    15,939.51x = 21,994.99 × 8,769.34
  4. Step 4: Simplify right side
    15,939.51x = 192,881,538.64
  5. Step 5: Solve for x
    x = 192,881,538.64/15,939.51
  6. Step 6: Final answer
    x = 12,100.85

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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.