Home / 20,875.03-31,242.83-12,414.08

Finding the Fourth Proportional to 20,875.03, 31,242.83 and 12,414.08

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Solution

The fourth proportional to 20,875.03, 31,242.83 and 12,414.08 is: 18,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.03 : 31,242.83 = 12,414.08 : x
  2. Step 2: Convert to fraction form
    20,875.03/31,242.83 = 12,414.08/x
  3. Step 3: Cross multiply
    20,875.03x = 31,242.83 × 12,414.08
  4. Step 4: Simplify right side
    20,875.03x = 387,850,772.76
  5. Step 5: Solve for x
    x = 387,850,772.76/20,875.03
  6. Step 6: Final answer
    x = 18,579.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.