Home / 28,516.66-42,767.43-8,521.42

Finding the Fourth Proportional to 28,516.66, 42,767.43 and 8,521.42

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Solution

The fourth proportional to 28,516.66, 42,767.43 and 8,521.42 is: 12,779.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.66 : 42,767.43 = 8,521.42 : x
  2. Step 2: Convert to fraction form
    28,516.66/42,767.43 = 8,521.42/x
  3. Step 3: Cross multiply
    28,516.66x = 42,767.43 × 8,521.42
  4. Step 4: Simplify right side
    28,516.66x = 364,439,233.35
  5. Step 5: Solve for x
    x = 364,439,233.35/28,516.66
  6. Step 6: Final answer
    x = 12,779.87

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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.