Home / 21,385.04-29,348.46-19,687.37

Finding the Fourth Proportional to 21,385.04, 29,348.46 and 19,687.37

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Solution

The fourth proportional to 21,385.04, 29,348.46 and 19,687.37 is: 27,018.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.04 : 29,348.46 = 19,687.37 : x
  2. Step 2: Convert to fraction form
    21,385.04/29,348.46 = 19,687.37/x
  3. Step 3: Cross multiply
    21,385.04x = 29,348.46 × 19,687.37
  4. Step 4: Simplify right side
    21,385.04x = 577,793,844.21
  5. Step 5: Solve for x
    x = 577,793,844.21/21,385.04
  6. Step 6: Final answer
    x = 27,018.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.