Home / 21,824.18-30,116.32-12,392.54

Finding the Fourth Proportional to 21,824.18, 30,116.32 and 12,392.54

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Solution

The fourth proportional to 21,824.18, 30,116.32 and 12,392.54 is: 17,101.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.18 : 30,116.32 = 12,392.54 : x
  2. Step 2: Convert to fraction form
    21,824.18/30,116.32 = 12,392.54/x
  3. Step 3: Cross multiply
    21,824.18x = 30,116.32 × 12,392.54
  4. Step 4: Simplify right side
    21,824.18x = 373,217,549.67
  5. Step 5: Solve for x
    x = 373,217,549.67/21,824.18
  6. Step 6: Final answer
    x = 17,101.11

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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.