Home / 28,427.78-39,246.38-19,712.18

Finding the Fourth Proportional to 28,427.78, 39,246.38 and 19,712.18

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Solution

The fourth proportional to 28,427.78, 39,246.38 and 19,712.18 is: 27,213.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.78 : 39,246.38 = 19,712.18 : x
  2. Step 2: Convert to fraction form
    28,427.78/39,246.38 = 19,712.18/x
  3. Step 3: Cross multiply
    28,427.78x = 39,246.38 × 19,712.18
  4. Step 4: Simplify right side
    28,427.78x = 773,631,706.91
  5. Step 5: Solve for x
    x = 773,631,706.91/28,427.78
  6. Step 6: Final answer
    x = 27,213.93

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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.