Home / 20,719.67-28,603.98-16,172.60

Finding the Fourth Proportional to 20,719.67, 28,603.98 and 16,172.60

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Solution

The fourth proportional to 20,719.67, 28,603.98 and 16,172.60 is: 22,326.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.67 : 28,603.98 = 16,172.60 : x
  2. Step 2: Convert to fraction form
    20,719.67/28,603.98 = 16,172.60/x
  3. Step 3: Cross multiply
    20,719.67x = 28,603.98 × 16,172.60
  4. Step 4: Simplify right side
    20,719.67x = 462,600,726.95
  5. Step 5: Solve for x
    x = 462,600,726.95/20,719.67
  6. Step 6: Final answer
    x = 22,326.65

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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.