Home / 21,209.46-29,266.56-12,710.54

Finding the Fourth Proportional to 21,209.46, 29,266.56 and 12,710.54

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Solution

The fourth proportional to 21,209.46, 29,266.56 and 12,710.54 is: 17,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.46 : 29,266.56 = 12,710.54 : x
  2. Step 2: Convert to fraction form
    21,209.46/29,266.56 = 12,710.54/x
  3. Step 3: Cross multiply
    21,209.46x = 29,266.56 × 12,710.54
  4. Step 4: Simplify right side
    21,209.46x = 371,993,635.21
  5. Step 5: Solve for x
    x = 371,993,635.21/21,209.46
  6. Step 6: Final answer
    x = 17,539.04

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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.