Home / 12,691.81-19,045.59-6,118.66

Finding the Fourth Proportional to 12,691.81, 19,045.59 and 6,118.66

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Solution

The fourth proportional to 12,691.81, 19,045.59 and 6,118.66 is: 9,181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.81 : 19,045.59 = 6,118.66 : x
  2. Step 2: Convert to fraction form
    12,691.81/19,045.59 = 6,118.66/x
  3. Step 3: Cross multiply
    12,691.81x = 19,045.59 × 6,118.66
  4. Step 4: Simplify right side
    12,691.81x = 116,533,489.71
  5. Step 5: Solve for x
    x = 116,533,489.71/12,691.81
  6. Step 6: Final answer
    x = 9,181.79

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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.