Home / 28,081.28-42,112.20-15,620.24

Finding the Fourth Proportional to 28,081.28, 42,112.20 and 15,620.24

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Solution

The fourth proportional to 28,081.28, 42,112.20 and 15,620.24 is: 23,424.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.28 : 42,112.20 = 15,620.24 : x
  2. Step 2: Convert to fraction form
    28,081.28/42,112.20 = 15,620.24/x
  3. Step 3: Cross multiply
    28,081.28x = 42,112.20 × 15,620.24
  4. Step 4: Simplify right side
    28,081.28x = 657,802,670.93
  5. Step 5: Solve for x
    x = 657,802,670.93/28,081.28
  6. Step 6: Final answer
    x = 23,424.95

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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.