Home / 20,772.30-31,158.72-5,981.46

Finding the Fourth Proportional to 20,772.30, 31,158.72 and 5,981.46

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Solution

The fourth proportional to 20,772.30, 31,158.72 and 5,981.46 is: 8,972.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.30 : 31,158.72 = 5,981.46 : x
  2. Step 2: Convert to fraction form
    20,772.30/31,158.72 = 5,981.46/x
  3. Step 3: Cross multiply
    20,772.30x = 31,158.72 × 5,981.46
  4. Step 4: Simplify right side
    20,772.30x = 186,374,637.33
  5. Step 5: Solve for x
    x = 186,374,637.33/20,772.30
  6. Step 6: Final answer
    x = 8,972.27

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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.