Home / 21,393.57-29,513.30-13,842.36

Finding the Fourth Proportional to 21,393.57, 29,513.30 and 13,842.36

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Solution

The fourth proportional to 21,393.57, 29,513.30 and 13,842.36 is: 19,096.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.57 : 29,513.30 = 13,842.36 : x
  2. Step 2: Convert to fraction form
    21,393.57/29,513.30 = 13,842.36/x
  3. Step 3: Cross multiply
    21,393.57x = 29,513.30 × 13,842.36
  4. Step 4: Simplify right side
    21,393.57x = 408,533,723.39
  5. Step 5: Solve for x
    x = 408,533,723.39/21,393.57
  6. Step 6: Final answer
    x = 19,096.10

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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.