Home / 11,455.95-15,816.83-8,798.61

Finding the Fourth Proportional to 11,455.95, 15,816.83 and 8,798.61

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Solution

The fourth proportional to 11,455.95, 15,816.83 and 8,798.61 is: 12,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.95 : 15,816.83 = 8,798.61 : x
  2. Step 2: Convert to fraction form
    11,455.95/15,816.83 = 8,798.61/x
  3. Step 3: Cross multiply
    11,455.95x = 15,816.83 × 8,798.61
  4. Step 4: Simplify right side
    11,455.95x = 139,166,074.61
  5. Step 5: Solve for x
    x = 139,166,074.61/11,455.95
  6. Step 6: Final answer
    x = 12,147.93

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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.