Home / 20,719.55-28,603.81-16,172.48

Finding the Fourth Proportional to 20,719.55, 28,603.81 and 16,172.48

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Solution

The fourth proportional to 20,719.55, 28,603.81 and 16,172.48 is: 22,326.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.55 : 28,603.81 = 16,172.48 : x
  2. Step 2: Convert to fraction form
    20,719.55/28,603.81 = 16,172.48/x
  3. Step 3: Cross multiply
    20,719.55x = 28,603.81 × 16,172.48
  4. Step 4: Simplify right side
    20,719.55x = 462,594,321.27
  5. Step 5: Solve for x
    x = 462,594,321.27/20,719.55
  6. Step 6: Final answer
    x = 22,326.47

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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.