Home / 20,431.62-28,223.37-16,011.18

Finding the Fourth Proportional to 20,431.62, 28,223.37 and 16,011.18

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Solution

The fourth proportional to 20,431.62, 28,223.37 and 16,011.18 is: 22,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.62 : 28,223.37 = 16,011.18 : x
  2. Step 2: Convert to fraction form
    20,431.62/28,223.37 = 16,011.18/x
  3. Step 3: Cross multiply
    20,431.62x = 28,223.37 × 16,011.18
  4. Step 4: Simplify right side
    20,431.62x = 451,889,457.28
  5. Step 5: Solve for x
    x = 451,889,457.28/20,431.62
  6. Step 6: Final answer
    x = 22,117.16

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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.