Home / 12,612.42-18,918.36-3,124.62

Finding the Fourth Proportional to 12,612.42, 18,918.36 and 3,124.62

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Solution

The fourth proportional to 12,612.42, 18,918.36 and 3,124.62 is: 4,686.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.42 : 18,918.36 = 3,124.62 : x
  2. Step 2: Convert to fraction form
    12,612.42/18,918.36 = 3,124.62/x
  3. Step 3: Cross multiply
    12,612.42x = 18,918.36 × 3,124.62
  4. Step 4: Simplify right side
    12,612.42x = 59,112,686.02
  5. Step 5: Solve for x
    x = 59,112,686.02/12,612.42
  6. Step 6: Final answer
    x = 4,686.86

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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.