Home / 20,380.14-30,599.40-15,131.34

Finding the Fourth Proportional to 20,380.14, 30,599.40 and 15,131.34

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Solution

The fourth proportional to 20,380.14, 30,599.40 and 15,131.34 is: 22,718.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.14 : 30,599.40 = 15,131.34 : x
  2. Step 2: Convert to fraction form
    20,380.14/30,599.40 = 15,131.34/x
  3. Step 3: Cross multiply
    20,380.14x = 30,599.40 × 15,131.34
  4. Step 4: Simplify right side
    20,380.14x = 463,009,925.20
  5. Step 5: Solve for x
    x = 463,009,925.20/20,380.14
  6. Step 6: Final answer
    x = 22,718.68

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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.