Home / 20,526.41-28,326.62-12,028.78

Finding the Fourth Proportional to 20,526.41, 28,326.62 and 12,028.78

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Solution

The fourth proportional to 20,526.41, 28,326.62 and 12,028.78 is: 16,599.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.41 : 28,326.62 = 12,028.78 : x
  2. Step 2: Convert to fraction form
    20,526.41/28,326.62 = 12,028.78/x
  3. Step 3: Cross multiply
    20,526.41x = 28,326.62 × 12,028.78
  4. Step 4: Simplify right side
    20,526.41x = 340,734,680.12
  5. Step 5: Solve for x
    x = 340,734,680.12/20,526.41
  6. Step 6: Final answer
    x = 16,599.82

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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.