Home / 20,159.94-27,820.08-11,207.28

Finding the Fourth Proportional to 20,159.94, 27,820.08 and 11,207.28

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Solution

The fourth proportional to 20,159.94, 27,820.08 and 11,207.28 is: 15,465.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.94 : 27,820.08 = 11,207.28 : x
  2. Step 2: Convert to fraction form
    20,159.94/27,820.08 = 11,207.28/x
  3. Step 3: Cross multiply
    20,159.94x = 27,820.08 × 11,207.28
  4. Step 4: Simplify right side
    20,159.94x = 311,787,426.18
  5. Step 5: Solve for x
    x = 311,787,426.18/20,159.94
  6. Step 6: Final answer
    x = 15,465.69

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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.