Home / 20,844.17-28,704.29-18,117.47

Finding the Fourth Proportional to 20,844.17, 28,704.29 and 18,117.47

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Solution

The fourth proportional to 20,844.17, 28,704.29 and 18,117.47 is: 24,949.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.17 : 28,704.29 = 18,117.47 : x
  2. Step 2: Convert to fraction form
    20,844.17/28,704.29 = 18,117.47/x
  3. Step 3: Cross multiply
    20,844.17x = 28,704.29 × 18,117.47
  4. Step 4: Simplify right side
    20,844.17x = 520,048,878.84
  5. Step 5: Solve for x
    x = 520,048,878.84/20,844.17
  6. Step 6: Final answer
    x = 24,949.37

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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.