Home / 20,671.48-28,516.62-12,282.04

Finding the Fourth Proportional to 20,671.48, 28,516.62 and 12,282.04

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Solution

The fourth proportional to 20,671.48, 28,516.62 and 12,282.04 is: 16,943.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.48 : 28,516.62 = 12,282.04 : x
  2. Step 2: Convert to fraction form
    20,671.48/28,516.62 = 12,282.04/x
  3. Step 3: Cross multiply
    20,671.48x = 28,516.62 × 12,282.04
  4. Step 4: Simplify right side
    20,671.48x = 350,242,267.50
  5. Step 5: Solve for x
    x = 350,242,267.50/20,671.48
  6. Step 6: Final answer
    x = 16,943.26

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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.