Home / 20,265.12-30,384.52-8,415.64

Finding the Fourth Proportional to 20,265.12, 30,384.52 and 8,415.64

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Solution

The fourth proportional to 20,265.12, 30,384.52 and 8,415.64 is: 12,617.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.12 : 30,384.52 = 8,415.64 : x
  2. Step 2: Convert to fraction form
    20,265.12/30,384.52 = 8,415.64/x
  3. Step 3: Cross multiply
    20,265.12x = 30,384.52 × 8,415.64
  4. Step 4: Simplify right side
    20,265.12x = 255,705,181.89
  5. Step 5: Solve for x
    x = 255,705,181.89/20,265.12
  6. Step 6: Final answer
    x = 12,617.99

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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.