Home / 11,455.45-15,816.14-8,798.11

Finding the Fourth Proportional to 11,455.45, 15,816.14 and 8,798.11

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Solution

The fourth proportional to 11,455.45, 15,816.14 and 8,798.11 is: 12,147.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.45 : 15,816.14 = 8,798.11 : x
  2. Step 2: Convert to fraction form
    11,455.45/15,816.14 = 8,798.11/x
  3. Step 3: Cross multiply
    11,455.45x = 15,816.14 × 8,798.11
  4. Step 4: Simplify right side
    11,455.45x = 139,152,139.50
  5. Step 5: Solve for x
    x = 139,152,139.50/11,455.45
  6. Step 6: Final answer
    x = 12,147.24

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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.