Home / 13,929.32-19,218.66-8,964.20

Finding the Fourth Proportional to 13,929.32, 19,218.66 and 8,964.20

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Solution

The fourth proportional to 13,929.32, 19,218.66 and 8,964.20 is: 12,368.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.32 : 19,218.66 = 8,964.20 : x
  2. Step 2: Convert to fraction form
    13,929.32/19,218.66 = 8,964.20/x
  3. Step 3: Cross multiply
    13,929.32x = 19,218.66 × 8,964.20
  4. Step 4: Simplify right side
    13,929.32x = 172,279,911.97
  5. Step 5: Solve for x
    x = 172,279,911.97/13,929.32
  6. Step 6: Final answer
    x = 12,368.15

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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.