Home / 21,137.04-29,188.50-13,601.00

Finding the Fourth Proportional to 21,137.04, 29,188.50 and 13,601.00

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Solution

The fourth proportional to 21,137.04, 29,188.50 and 13,601.00 is: 18,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.04 : 29,188.50 = 13,601.00 : x
  2. Step 2: Convert to fraction form
    21,137.04/29,188.50 = 13,601.00/x
  3. Step 3: Cross multiply
    21,137.04x = 29,188.50 × 13,601.00
  4. Step 4: Simplify right side
    21,137.04x = 396,992,642.56
  5. Step 5: Solve for x
    x = 396,992,642.56/21,137.04
  6. Step 6: Final answer
    x = 18,781.85

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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.