Home / 21,427.79-29,566.83-13,464.38

Finding the Fourth Proportional to 21,427.79, 29,566.83 and 13,464.38

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Solution

The fourth proportional to 21,427.79, 29,566.83 and 13,464.38 is: 18,578.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.79 : 29,566.83 = 13,464.38 : x
  2. Step 2: Convert to fraction form
    21,427.79/29,566.83 = 13,464.38/x
  3. Step 3: Cross multiply
    21,427.79x = 29,566.83 × 13,464.38
  4. Step 4: Simplify right side
    21,427.79x = 398,098,886.68
  5. Step 5: Solve for x
    x = 398,098,886.68/21,427.79
  6. Step 6: Final answer
    x = 18,578.63

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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.