Home / 20,568.88-28,384.86-12,071.08

Finding the Fourth Proportional to 20,568.88, 28,384.86 and 12,071.08

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Solution

The fourth proportional to 20,568.88, 28,384.86 and 12,071.08 is: 16,657.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.88 : 28,384.86 = 12,071.08 : x
  2. Step 2: Convert to fraction form
    20,568.88/28,384.86 = 12,071.08/x
  3. Step 3: Cross multiply
    20,568.88x = 28,384.86 × 12,071.08
  4. Step 4: Simplify right side
    20,568.88x = 342,635,915.85
  5. Step 5: Solve for x
    x = 342,635,915.85/20,568.88
  6. Step 6: Final answer
    x = 16,657.98

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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.