Home / 21,591.12-29,803.21-12,641.50

Finding the Fourth Proportional to 21,591.12, 29,803.21 and 12,641.50

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Solution

The fourth proportional to 21,591.12, 29,803.21 and 12,641.50 is: 17,449.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,591.12 : 29,803.21 = 12,641.50 : x
  2. Step 2: Convert to fraction form
    21,591.12/29,803.21 = 12,641.50/x
  3. Step 3: Cross multiply
    21,591.12x = 29,803.21 × 12,641.50
  4. Step 4: Simplify right side
    21,591.12x = 376,757,284.87
  5. Step 5: Solve for x
    x = 376,757,284.87/21,591.12
  6. Step 6: Final answer
    x = 17,449.64

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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.