Home / 21,917.61-30,246.66-12,355.74

Finding the Fourth Proportional to 21,917.61, 30,246.66 and 12,355.74

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Solution

The fourth proportional to 21,917.61, 30,246.66 and 12,355.74 is: 17,051.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.61 : 30,246.66 = 12,355.74 : x
  2. Step 2: Convert to fraction form
    21,917.61/30,246.66 = 12,355.74/x
  3. Step 3: Cross multiply
    21,917.61x = 30,246.66 × 12,355.74
  4. Step 4: Simplify right side
    21,917.61x = 373,719,866.83
  5. Step 5: Solve for x
    x = 373,719,866.83/21,917.61
  6. Step 6: Final answer
    x = 17,051.12

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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.