Home / 15,506.86-21,391.94-9,214.78

Finding the Fourth Proportional to 15,506.86, 21,391.94 and 9,214.78

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Solution

The fourth proportional to 15,506.86, 21,391.94 and 9,214.78 is: 12,711.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.86 : 21,391.94 = 9,214.78 : x
  2. Step 2: Convert to fraction form
    15,506.86/21,391.94 = 9,214.78/x
  3. Step 3: Cross multiply
    15,506.86x = 21,391.94 × 9,214.78
  4. Step 4: Simplify right side
    15,506.86x = 197,122,020.87
  5. Step 5: Solve for x
    x = 197,122,020.87/15,506.86
  6. Step 6: Final answer
    x = 12,711.92

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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.