Home / 18,929.26-26,117.12-12,215.18

Finding the Fourth Proportional to 18,929.26, 26,117.12 and 12,215.18

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Solution

The fourth proportional to 18,929.26, 26,117.12 and 12,215.18 is: 16,853.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.26 : 26,117.12 = 12,215.18 : x
  2. Step 2: Convert to fraction form
    18,929.26/26,117.12 = 12,215.18/x
  3. Step 3: Cross multiply
    18,929.26x = 26,117.12 × 12,215.18
  4. Step 4: Simplify right side
    18,929.26x = 319,025,321.88
  5. Step 5: Solve for x
    x = 319,025,321.88/18,929.26
  6. Step 6: Final answer
    x = 16,853.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.