Home / 21,469.17-29,621.84-12,392.31

Finding the Fourth Proportional to 21,469.17, 29,621.84 and 12,392.31

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Solution

The fourth proportional to 21,469.17, 29,621.84 and 12,392.31 is: 17,098.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,469.17 : 29,621.84 = 12,392.31 : x
  2. Step 2: Convert to fraction form
    21,469.17/29,621.84 = 12,392.31/x
  3. Step 3: Cross multiply
    21,469.17x = 29,621.84 × 12,392.31
  4. Step 4: Simplify right side
    21,469.17x = 367,082,875.94
  5. Step 5: Solve for x
    x = 367,082,875.94/21,469.17
  6. Step 6: Final answer
    x = 17,098.14

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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.