Home / 28,406.79-42,576.17-20,074.32

Finding the Fourth Proportional to 28,406.79, 42,576.17 and 20,074.32

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Solution

The fourth proportional to 28,406.79, 42,576.17 and 20,074.32 is: 30,087.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,406.79 : 42,576.17 = 20,074.32 : x
  2. Step 2: Convert to fraction form
    28,406.79/42,576.17 = 20,074.32/x
  3. Step 3: Cross multiply
    28,406.79x = 42,576.17 × 20,074.32
  4. Step 4: Simplify right side
    28,406.79x = 854,687,560.58
  5. Step 5: Solve for x
    x = 854,687,560.58/28,406.79
  6. Step 6: Final answer
    x = 30,087.44

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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.