Home / 21,351.38-29,478.46-13,801.36

Finding the Fourth Proportional to 21,351.38, 29,478.46 and 13,801.36

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Solution

The fourth proportional to 21,351.38, 29,478.46 and 13,801.36 is: 19,054.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,351.38 : 29,478.46 = 13,801.36 : x
  2. Step 2: Convert to fraction form
    21,351.38/29,478.46 = 13,801.36/x
  3. Step 3: Cross multiply
    21,351.38x = 29,478.46 × 13,801.36
  4. Step 4: Simplify right side
    21,351.38x = 406,842,838.71
  5. Step 5: Solve for x
    x = 406,842,838.71/21,351.38
  6. Step 6: Final answer
    x = 19,054.64

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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.