Home / 20,153.94-27,820.26-15,132.66

Finding the Fourth Proportional to 20,153.94, 27,820.26 and 15,132.66

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Solution

The fourth proportional to 20,153.94, 27,820.26 and 15,132.66 is: 20,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.94 : 27,820.26 = 15,132.66 : x
  2. Step 2: Convert to fraction form
    20,153.94/27,820.26 = 15,132.66/x
  3. Step 3: Cross multiply
    20,153.94x = 27,820.26 × 15,132.66
  4. Step 4: Simplify right side
    20,153.94x = 420,994,535.69
  5. Step 5: Solve for x
    x = 420,994,535.69/20,153.94
  6. Step 6: Final answer
    x = 20,888.94

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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.