Home / 13,438.14-20,157.15-5,116.20

Finding the Fourth Proportional to 13,438.14, 20,157.15 and 5,116.20

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Solution

The fourth proportional to 13,438.14, 20,157.15 and 5,116.20 is: 7,674.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.14 : 20,157.15 = 5,116.20 : x
  2. Step 2: Convert to fraction form
    13,438.14/20,157.15 = 5,116.20/x
  3. Step 3: Cross multiply
    13,438.14x = 20,157.15 × 5,116.20
  4. Step 4: Simplify right side
    13,438.14x = 103,128,010.83
  5. Step 5: Solve for x
    x = 103,128,010.83/13,438.14
  6. Step 6: Final answer
    x = 7,674.28

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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.