Home / 19,731.33-27,228.81-10,778.88

Finding the Fourth Proportional to 19,731.33, 27,228.81 and 10,778.88

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Solution

The fourth proportional to 19,731.33, 27,228.81 and 10,778.88 is: 14,874.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731.33 : 27,228.81 = 10,778.88 : x
  2. Step 2: Convert to fraction form
    19,731.33/27,228.81 = 10,778.88/x
  3. Step 3: Cross multiply
    19,731.33x = 27,228.81 × 10,778.88
  4. Step 4: Simplify right side
    19,731.33x = 293,496,075.53
  5. Step 5: Solve for x
    x = 293,496,075.53/19,731.33
  6. Step 6: Final answer
    x = 14,874.62

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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.