Home / 20,156.76-27,780.12-16,392.36

Finding the Fourth Proportional to 20,156.76, 27,780.12 and 16,392.36

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Solution

The fourth proportional to 20,156.76, 27,780.12 and 16,392.36 is: 22,592.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.76 : 27,780.12 = 16,392.36 : x
  2. Step 2: Convert to fraction form
    20,156.76/27,780.12 = 16,392.36/x
  3. Step 3: Cross multiply
    20,156.76x = 27,780.12 × 16,392.36
  4. Step 4: Simplify right side
    20,156.76x = 455,381,727.88
  5. Step 5: Solve for x
    x = 455,381,727.88/20,156.76
  6. Step 6: Final answer
    x = 22,592.01

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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.