Home / 11,718.95-16,155.32-8,355.92

Finding the Fourth Proportional to 11,718.95, 16,155.32 and 8,355.92

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Solution

The fourth proportional to 11,718.95, 16,155.32 and 8,355.92 is: 11,519.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.95 : 16,155.32 = 8,355.92 : x
  2. Step 2: Convert to fraction form
    11,718.95/16,155.32 = 8,355.92/x
  3. Step 3: Cross multiply
    11,718.95x = 16,155.32 × 8,355.92
  4. Step 4: Simplify right side
    11,718.95x = 134,992,438.94
  5. Step 5: Solve for x
    x = 134,992,438.94/11,718.95
  6. Step 6: Final answer
    x = 11,519.16

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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.