Home / 21,614.75-29,828.36-11,678.75

Finding the Fourth Proportional to 21,614.75, 29,828.36 and 11,678.75

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Solution

The fourth proportional to 21,614.75, 29,828.36 and 11,678.75 is: 16,116.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,614.75 : 29,828.36 = 11,678.75 : x
  2. Step 2: Convert to fraction form
    21,614.75/29,828.36 = 11,678.75/x
  3. Step 3: Cross multiply
    21,614.75x = 29,828.36 × 11,678.75
  4. Step 4: Simplify right side
    21,614.75x = 348,357,959.35
  5. Step 5: Solve for x
    x = 348,357,959.35/21,614.75
  6. Step 6: Final answer
    x = 16,116.68

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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.