Home / 22,049.47-30,428.54-11,978.08

Finding the Fourth Proportional to 22,049.47, 30,428.54 and 11,978.08

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Solution

The fourth proportional to 22,049.47, 30,428.54 and 11,978.08 is: 16,529.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,049.47 : 30,428.54 = 11,978.08 : x
  2. Step 2: Convert to fraction form
    22,049.47/30,428.54 = 11,978.08/x
  3. Step 3: Cross multiply
    22,049.47x = 30,428.54 × 11,978.08
  4. Step 4: Simplify right side
    22,049.47x = 364,475,486.40
  5. Step 5: Solve for x
    x = 364,475,486.40/22,049.47
  6. Step 6: Final answer
    x = 16,529.90

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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.