Home / 20,155.64-27,795.71-15,367.17

Finding the Fourth Proportional to 20,155.64, 27,795.71 and 15,367.17

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Solution

The fourth proportional to 20,155.64, 27,795.71 and 15,367.17 is: 21,192.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.64 : 27,795.71 = 15,367.17 : x
  2. Step 2: Convert to fraction form
    20,155.64/27,795.71 = 15,367.17/x
  3. Step 3: Cross multiply
    20,155.64x = 27,795.71 × 15,367.17
  4. Step 4: Simplify right side
    20,155.64x = 427,141,300.70
  5. Step 5: Solve for x
    x = 427,141,300.70/20,155.64
  6. Step 6: Final answer
    x = 21,192.15

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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.