Home / 12,038.39-18,053.15-4,138.66

Finding the Fourth Proportional to 12,038.39, 18,053.15 and 4,138.66

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Solution

The fourth proportional to 12,038.39, 18,053.15 and 4,138.66 is: 6,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,038.39 : 18,053.15 = 4,138.66 : x
  2. Step 2: Convert to fraction form
    12,038.39/18,053.15 = 4,138.66/x
  3. Step 3: Cross multiply
    12,038.39x = 18,053.15 × 4,138.66
  4. Step 4: Simplify right side
    12,038.39x = 74,715,851.65
  5. Step 5: Solve for x
    x = 74,715,851.65/12,038.39
  6. Step 6: Final answer
    x = 6,206.47

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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.