Home / 20,908.17-28,852.51-11,347.85

Finding the Fourth Proportional to 20,908.17, 28,852.51 and 11,347.85

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Solution

The fourth proportional to 20,908.17, 28,852.51 and 11,347.85 is: 15,659.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.17 : 28,852.51 = 11,347.85 : x
  2. Step 2: Convert to fraction form
    20,908.17/28,852.51 = 11,347.85/x
  3. Step 3: Cross multiply
    20,908.17x = 28,852.51 × 11,347.85
  4. Step 4: Simplify right side
    20,908.17x = 327,414,038.37
  5. Step 5: Solve for x
    x = 327,414,038.37/20,908.17
  6. Step 6: Final answer
    x = 15,659.62

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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.