Home / 11,315.14-15,616.77-6,280.98

Finding the Fourth Proportional to 11,315.14, 15,616.77 and 6,280.98

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Solution

The fourth proportional to 11,315.14, 15,616.77 and 6,280.98 is: 8,668.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.14 : 15,616.77 = 6,280.98 : x
  2. Step 2: Convert to fraction form
    11,315.14/15,616.77 = 6,280.98/x
  3. Step 3: Cross multiply
    11,315.14x = 15,616.77 × 6,280.98
  4. Step 4: Simplify right side
    11,315.14x = 98,088,537.92
  5. Step 5: Solve for x
    x = 98,088,537.92/11,315.14
  6. Step 6: Final answer
    x = 8,668.78

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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.