Home / 20,719.61-28,603.89-16,172.54

Finding the Fourth Proportional to 20,719.61, 28,603.89 and 16,172.54

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Solution

The fourth proportional to 20,719.61, 28,603.89 and 16,172.54 is: 22,326.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.61 : 28,603.89 = 16,172.54 : x
  2. Step 2: Convert to fraction form
    20,719.61/28,603.89 = 16,172.54/x
  3. Step 3: Cross multiply
    20,719.61x = 28,603.89 × 16,172.54
  4. Step 4: Simplify right side
    20,719.61x = 462,597,412.16
  5. Step 5: Solve for x
    x = 462,597,412.16/20,719.61
  6. Step 6: Final answer
    x = 22,326.56

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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.