Home / 20,638.14-30,957.21-8,317.50

Finding the Fourth Proportional to 20,638.14, 30,957.21 and 8,317.50

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Solution

The fourth proportional to 20,638.14, 30,957.21 and 8,317.50 is: 12,476.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.14 : 30,957.21 = 8,317.50 : x
  2. Step 2: Convert to fraction form
    20,638.14/30,957.21 = 8,317.50/x
  3. Step 3: Cross multiply
    20,638.14x = 30,957.21 × 8,317.50
  4. Step 4: Simplify right side
    20,638.14x = 257,486,594.18
  5. Step 5: Solve for x
    x = 257,486,594.18/20,638.14
  6. Step 6: Final answer
    x = 12,476.25

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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.