Home / 20,107.55-30,154.32-8,257.95

Finding the Fourth Proportional to 20,107.55, 30,154.32 and 8,257.95

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Solution

The fourth proportional to 20,107.55, 30,154.32 and 8,257.95 is: 12,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.55 : 30,154.32 = 8,257.95 : x
  2. Step 2: Convert to fraction form
    20,107.55/30,154.32 = 8,257.95/x
  3. Step 3: Cross multiply
    20,107.55x = 30,154.32 × 8,257.95
  4. Step 4: Simplify right side
    20,107.55x = 249,012,866.84
  5. Step 5: Solve for x
    x = 249,012,866.84/20,107.55
  6. Step 6: Final answer
    x = 12,384.05

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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.