Home / 20,648.40-30,972.60-5,065.89

Finding the Fourth Proportional to 20,648.40, 30,972.60 and 5,065.89

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Solution

The fourth proportional to 20,648.40, 30,972.60 and 5,065.89 is: 7,598.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.40 : 30,972.60 = 5,065.89 : x
  2. Step 2: Convert to fraction form
    20,648.40/30,972.60 = 5,065.89/x
  3. Step 3: Cross multiply
    20,648.40x = 30,972.60 × 5,065.89
  4. Step 4: Simplify right side
    20,648.40x = 156,903,784.61
  5. Step 5: Solve for x
    x = 156,903,784.61/20,648.40
  6. Step 6: Final answer
    x = 7,598.84

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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.