Home / 12,135.10-18,207.02-4,238.77

Finding the Fourth Proportional to 12,135.10, 18,207.02 and 4,238.77

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Solution

The fourth proportional to 12,135.10, 18,207.02 and 4,238.77 is: 6,359.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.10 : 18,207.02 = 4,238.77 : x
  2. Step 2: Convert to fraction form
    12,135.10/18,207.02 = 4,238.77/x
  3. Step 3: Cross multiply
    12,135.10x = 18,207.02 × 4,238.77
  4. Step 4: Simplify right side
    12,135.10x = 77,175,370.17
  5. Step 5: Solve for x
    x = 77,175,370.17/12,135.10
  6. Step 6: Final answer
    x = 6,359.68

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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.