Home / 20,719.37-28,567.63-16,121.48

Finding the Fourth Proportional to 20,719.37, 28,567.63 and 16,121.48

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Solution

The fourth proportional to 20,719.37, 28,567.63 and 16,121.48 is: 22,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.37 : 28,567.63 = 16,121.48 : x
  2. Step 2: Convert to fraction form
    20,719.37/28,567.63 = 16,121.48/x
  3. Step 3: Cross multiply
    20,719.37x = 28,567.63 × 16,121.48
  4. Step 4: Simplify right side
    20,719.37x = 460,552,353.01
  5. Step 5: Solve for x
    x = 460,552,353.01/20,719.37
  6. Step 6: Final answer
    x = 22,228.10

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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.