Home / 21,287.04-29,404.80-19,299.84

Finding the Fourth Proportional to 21,287.04, 29,404.80 and 19,299.84

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Solution

The fourth proportional to 21,287.04, 29,404.80 and 19,299.84 is: 26,659.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.04 : 29,404.80 = 19,299.84 : x
  2. Step 2: Convert to fraction form
    21,287.04/29,404.80 = 19,299.84/x
  3. Step 3: Cross multiply
    21,287.04x = 29,404.80 × 19,299.84
  4. Step 4: Simplify right side
    21,287.04x = 567,507,935.23
  5. Step 5: Solve for x
    x = 567,507,935.23/21,287.04
  6. Step 6: Final answer
    x = 26,659.79

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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.