Home / 15,849.52-21,872.20-9,135.00

Finding the Fourth Proportional to 15,849.52, 21,872.20 and 9,135.00

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Solution

The fourth proportional to 15,849.52, 21,872.20 and 9,135.00 is: 12,606.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,849.52 : 21,872.20 = 9,135.00 : x
  2. Step 2: Convert to fraction form
    15,849.52/21,872.20 = 9,135.00/x
  3. Step 3: Cross multiply
    15,849.52x = 21,872.20 × 9,135.00
  4. Step 4: Simplify right side
    15,849.52x = 199,802,628.50
  5. Step 5: Solve for x
    x = 199,802,628.50/15,849.52
  6. Step 6: Final answer
    x = 12,606.22

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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.