Home / 20,725.17-28,600.80-11,293.74

Finding the Fourth Proportional to 20,725.17, 28,600.80 and 11,293.74

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Solution

The fourth proportional to 20,725.17, 28,600.80 and 11,293.74 is: 15,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.17 : 28,600.80 = 11,293.74 : x
  2. Step 2: Convert to fraction form
    20,725.17/28,600.80 = 11,293.74/x
  3. Step 3: Cross multiply
    20,725.17x = 28,600.80 × 11,293.74
  4. Step 4: Simplify right side
    20,725.17x = 323,009,998.99
  5. Step 5: Solve for x
    x = 323,009,998.99/20,725.17
  6. Step 6: Final answer
    x = 15,585.40

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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.