Home / 20,945.19-28,904.36-11,995.66

Finding the Fourth Proportional to 20,945.19, 28,904.36 and 11,995.66

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Solution

The fourth proportional to 20,945.19, 28,904.36 and 11,995.66 is: 16,554.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.19 : 28,904.36 = 11,995.66 : x
  2. Step 2: Convert to fraction form
    20,945.19/28,904.36 = 11,995.66/x
  3. Step 3: Cross multiply
    20,945.19x = 28,904.36 × 11,995.66
  4. Step 4: Simplify right side
    20,945.19x = 346,726,730.56
  5. Step 5: Solve for x
    x = 346,726,730.56/20,945.19
  6. Step 6: Final answer
    x = 16,554.00

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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.