Home / 21,884.87-30,158.98-15,907.07

Finding the Fourth Proportional to 21,884.87, 30,158.98 and 15,907.07

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Solution

The fourth proportional to 21,884.87, 30,158.98 and 15,907.07 is: 21,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,884.87 : 30,158.98 = 15,907.07 : x
  2. Step 2: Convert to fraction form
    21,884.87/30,158.98 = 15,907.07/x
  3. Step 3: Cross multiply
    21,884.87x = 30,158.98 × 15,907.07
  4. Step 4: Simplify right side
    21,884.87x = 479,741,005.99
  5. Step 5: Solve for x
    x = 479,741,005.99/21,884.87
  6. Step 6: Final answer
    x = 21,921.13

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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.