Home / 15,481.80-21,365.64-8,767.08

Finding the Fourth Proportional to 15,481.80, 21,365.64 and 8,767.08

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Solution

The fourth proportional to 15,481.80, 21,365.64 and 8,767.08 is: 12,099.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.80 : 21,365.64 = 8,767.08 : x
  2. Step 2: Convert to fraction form
    15,481.80/21,365.64 = 8,767.08/x
  3. Step 3: Cross multiply
    15,481.80x = 21,365.64 × 8,767.08
  4. Step 4: Simplify right side
    15,481.80x = 187,314,275.13
  5. Step 5: Solve for x
    x = 187,314,275.13/15,481.80
  6. Step 6: Final answer
    x = 12,099.00

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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.