Home / 12,690.81-19,044.09-6,117.66

Finding the Fourth Proportional to 12,690.81, 19,044.09 and 6,117.66

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Solution

The fourth proportional to 12,690.81, 19,044.09 and 6,117.66 is: 9,180.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.81 : 19,044.09 = 6,117.66 : x
  2. Step 2: Convert to fraction form
    12,690.81/19,044.09 = 6,117.66/x
  3. Step 3: Cross multiply
    12,690.81x = 19,044.09 × 6,117.66
  4. Step 4: Simplify right side
    12,690.81x = 116,505,267.63
  5. Step 5: Solve for x
    x = 116,505,267.63/12,690.81
  6. Step 6: Final answer
    x = 9,180.29

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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.