Home / 19,659.11-27,129.90-10,706.79

Finding the Fourth Proportional to 19,659.11, 27,129.90 and 10,706.79

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Solution

The fourth proportional to 19,659.11, 27,129.90 and 10,706.79 is: 14,775.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.11 : 27,129.90 = 10,706.79 : x
  2. Step 2: Convert to fraction form
    19,659.11/27,129.90 = 10,706.79/x
  3. Step 3: Cross multiply
    19,659.11x = 27,129.90 × 10,706.79
  4. Step 4: Simplify right side
    19,659.11x = 290,474,088.49
  5. Step 5: Solve for x
    x = 290,474,088.49/19,659.11
  6. Step 6: Final answer
    x = 14,775.55

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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.