Home / 28,390.88-42,586.32-8,668.38

Finding the Fourth Proportional to 28,390.88, 42,586.32 and 8,668.38

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Solution

The fourth proportional to 28,390.88, 42,586.32 and 8,668.38 is: 13,002.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.88 : 42,586.32 = 8,668.38 : x
  2. Step 2: Convert to fraction form
    28,390.88/42,586.32 = 8,668.38/x
  3. Step 3: Cross multiply
    28,390.88x = 42,586.32 × 8,668.38
  4. Step 4: Simplify right side
    28,390.88x = 369,154,404.56
  5. Step 5: Solve for x
    x = 369,154,404.56/28,390.88
  6. Step 6: Final answer
    x = 13,002.57

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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.