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Finding the Fourth Proportional to 20,479.82, 28,253.01 and 16,718.52

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Solution

The fourth proportional to 20,479.82, 28,253.01 and 16,718.52 is: 23,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.82 : 28,253.01 = 16,718.52 : x
  2. Step 2: Convert to fraction form
    20,479.82/28,253.01 = 16,718.52/x
  3. Step 3: Cross multiply
    20,479.82x = 28,253.01 × 16,718.52
  4. Step 4: Simplify right side
    20,479.82x = 472,348,681.39
  5. Step 5: Solve for x
    x = 472,348,681.39/20,479.82
  6. Step 6: Final answer
    x = 23,064.10

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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.