Home / 11,456.12-15,816.48-8,798.36

Finding the Fourth Proportional to 11,456.12, 15,816.48 and 8,798.36

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Solution

The fourth proportional to 11,456.12, 15,816.48 and 8,798.36 is: 12,147.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,456.12 : 15,816.48 = 8,798.36 : x
  2. Step 2: Convert to fraction form
    11,456.12/15,816.48 = 8,798.36/x
  3. Step 3: Cross multiply
    11,456.12x = 15,816.48 × 8,798.36
  4. Step 4: Simplify right side
    11,456.12x = 139,159,084.97
  5. Step 5: Solve for x
    x = 139,159,084.97/11,456.12
  6. Step 6: Final answer
    x = 12,147.14

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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.