Home / 12,276.85-18,411.91-3,390.05

Finding the Fourth Proportional to 12,276.85, 18,411.91 and 3,390.05

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Solution

The fourth proportional to 12,276.85, 18,411.91 and 3,390.05 is: 5,084.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276.85 : 18,411.91 = 3,390.05 : x
  2. Step 2: Convert to fraction form
    12,276.85/18,411.91 = 3,390.05/x
  3. Step 3: Cross multiply
    12,276.85x = 18,411.91 × 3,390.05
  4. Step 4: Simplify right side
    12,276.85x = 62,417,295.50
  5. Step 5: Solve for x
    x = 62,417,295.50/12,276.85
  6. Step 6: Final answer
    x = 5,084.15

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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.