Home / 18,438.02-27,656.41-10,121.95

Finding the Fourth Proportional to 18,438.02, 27,656.41 and 10,121.95

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Solution

The fourth proportional to 18,438.02, 27,656.41 and 10,121.95 is: 15,182.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.02 : 27,656.41 = 10,121.95 : x
  2. Step 2: Convert to fraction form
    18,438.02/27,656.41 = 10,121.95/x
  3. Step 3: Cross multiply
    18,438.02x = 27,656.41 × 10,121.95
  4. Step 4: Simplify right side
    18,438.02x = 279,936,799.20
  5. Step 5: Solve for x
    x = 279,936,799.20/18,438.02
  6. Step 6: Final answer
    x = 15,182.58

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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.