Home / 19,871.89-27,423.71-10,919.62

Finding the Fourth Proportional to 19,871.89, 27,423.71 and 10,919.62

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Solution

The fourth proportional to 19,871.89, 27,423.71 and 10,919.62 is: 15,069.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.89 : 27,423.71 = 10,919.62 : x
  2. Step 2: Convert to fraction form
    19,871.89/27,423.71 = 10,919.62/x
  3. Step 3: Cross multiply
    19,871.89x = 27,423.71 × 10,919.62
  4. Step 4: Simplify right side
    19,871.89x = 299,456,450.93
  5. Step 5: Solve for x
    x = 299,456,450.93/19,871.89
  6. Step 6: Final answer
    x = 15,069.35

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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.