Home / 19,731.30-27,228.84-10,778.57

Finding the Fourth Proportional to 19,731.30, 27,228.84 and 10,778.57

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Solution

The fourth proportional to 19,731.30, 27,228.84 and 10,778.57 is: 14,874.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731.30 : 27,228.84 = 10,778.57 : x
  2. Step 2: Convert to fraction form
    19,731.30/27,228.84 = 10,778.57/x
  3. Step 3: Cross multiply
    19,731.30x = 27,228.84 × 10,778.57
  4. Step 4: Simplify right side
    19,731.30x = 293,487,821.81
  5. Step 5: Solve for x
    x = 293,487,821.81/19,731.30
  6. Step 6: Final answer
    x = 14,874.23

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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.