Home / 20,132.88-27,784.84-15,088.20

Finding the Fourth Proportional to 20,132.88, 27,784.84 and 15,088.20

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Solution

The fourth proportional to 20,132.88, 27,784.84 and 15,088.20 is: 20,822.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.88 : 27,784.84 = 15,088.20 : x
  2. Step 2: Convert to fraction form
    20,132.88/27,784.84 = 15,088.20/x
  3. Step 3: Cross multiply
    20,132.88x = 27,784.84 × 15,088.20
  4. Step 4: Simplify right side
    20,132.88x = 419,223,222.89
  5. Step 5: Solve for x
    x = 419,223,222.89/20,132.88
  6. Step 6: Final answer
    x = 20,822.81

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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.