Home / 20,405.62-30,623.77-15,152.87

Finding the Fourth Proportional to 20,405.62, 30,623.77 and 15,152.87

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Solution

The fourth proportional to 20,405.62, 30,623.77 and 15,152.87 is: 22,740.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.62 : 30,623.77 = 15,152.87 : x
  2. Step 2: Convert to fraction form
    20,405.62/30,623.77 = 15,152.87/x
  3. Step 3: Cross multiply
    20,405.62x = 30,623.77 × 15,152.87
  4. Step 4: Simplify right side
    20,405.62x = 464,038,101.22
  5. Step 5: Solve for x
    x = 464,038,101.22/20,405.62
  6. Step 6: Final answer
    x = 22,740.70

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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.