Home / 28,211.41-42,234.04-20,848.69

Finding the Fourth Proportional to 28,211.41, 42,234.04 and 20,848.69

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Solution

The fourth proportional to 28,211.41, 42,234.04 and 20,848.69 is: 31,211.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.41 : 42,234.04 = 20,848.69 : x
  2. Step 2: Convert to fraction form
    28,211.41/42,234.04 = 20,848.69/x
  3. Step 3: Cross multiply
    28,211.41x = 42,234.04 × 20,848.69
  4. Step 4: Simplify right side
    28,211.41x = 880,524,407.41
  5. Step 5: Solve for x
    x = 880,524,407.41/28,211.41
  6. Step 6: Final answer
    x = 31,211.64

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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.