Home / 20,553.96-28,367.16-15,263.88

Finding the Fourth Proportional to 20,553.96, 28,367.16 and 15,263.88

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Solution

The fourth proportional to 20,553.96, 28,367.16 and 15,263.88 is: 21,066.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.96 : 28,367.16 = 15,263.88 : x
  2. Step 2: Convert to fraction form
    20,553.96/28,367.16 = 15,263.88/x
  3. Step 3: Cross multiply
    20,553.96x = 28,367.16 × 15,263.88
  4. Step 4: Simplify right side
    20,553.96x = 432,992,926.18
  5. Step 5: Solve for x
    x = 432,992,926.18/20,553.96
  6. Step 6: Final answer
    x = 21,066.16

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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.