Home / 18,428.47-27,620.82-10,621.15

Finding the Fourth Proportional to 18,428.47, 27,620.82 and 10,621.15

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Solution

The fourth proportional to 18,428.47, 27,620.82 and 10,621.15 is: 15,919.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.47 : 27,620.82 = 10,621.15 : x
  2. Step 2: Convert to fraction form
    18,428.47/27,620.82 = 10,621.15/x
  3. Step 3: Cross multiply
    18,428.47x = 27,620.82 × 10,621.15
  4. Step 4: Simplify right side
    18,428.47x = 293,364,734.24
  5. Step 5: Solve for x
    x = 293,364,734.24/18,428.47
  6. Step 6: Final answer
    x = 15,919.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.