Home / 20,718.54-28,602.43-16,171.47

Finding the Fourth Proportional to 20,718.54, 28,602.43 and 16,171.47

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Solution

The fourth proportional to 20,718.54, 28,602.43 and 16,171.47 is: 22,325.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.54 : 28,602.43 = 16,171.47 : x
  2. Step 2: Convert to fraction form
    20,718.54/28,602.43 = 16,171.47/x
  3. Step 3: Cross multiply
    20,718.54x = 28,602.43 × 16,171.47
  4. Step 4: Simplify right side
    20,718.54x = 462,543,329.32
  5. Step 5: Solve for x
    x = 462,543,329.32/20,718.54
  6. Step 6: Final answer
    x = 22,325.09

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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.