Home / 20,159.88-27,820.14-11,207.40

Finding the Fourth Proportional to 20,159.88, 27,820.14 and 11,207.40

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Solution

The fourth proportional to 20,159.88, 27,820.14 and 11,207.40 is: 15,465.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.88 : 27,820.14 = 11,207.40 : x
  2. Step 2: Convert to fraction form
    20,159.88/27,820.14 = 11,207.40/x
  3. Step 3: Cross multiply
    20,159.88x = 27,820.14 × 11,207.40
  4. Step 4: Simplify right side
    20,159.88x = 311,791,437.04
  5. Step 5: Solve for x
    x = 311,791,437.04/20,159.88
  6. Step 6: Final answer
    x = 15,465.94

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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.