Home / 21,612.69-29,825.01-12,181.32

Finding the Fourth Proportional to 21,612.69, 29,825.01 and 12,181.32

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Solution

The fourth proportional to 21,612.69, 29,825.01 and 12,181.32 is: 16,809.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.69 : 29,825.01 = 12,181.32 : x
  2. Step 2: Convert to fraction form
    21,612.69/29,825.01 = 12,181.32/x
  3. Step 3: Cross multiply
    21,612.69x = 29,825.01 × 12,181.32
  4. Step 4: Simplify right side
    21,612.69x = 363,307,990.81
  5. Step 5: Solve for x
    x = 363,307,990.81/21,612.69
  6. Step 6: Final answer
    x = 16,809.94

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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.