Home / 21,753.74-30,019.52-12,799.18

Finding the Fourth Proportional to 21,753.74, 30,019.52 and 12,799.18

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Solution

The fourth proportional to 21,753.74, 30,019.52 and 12,799.18 is: 17,662.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.74 : 30,019.52 = 12,799.18 : x
  2. Step 2: Convert to fraction form
    21,753.74/30,019.52 = 12,799.18/x
  3. Step 3: Cross multiply
    21,753.74x = 30,019.52 × 12,799.18
  4. Step 4: Simplify right side
    21,753.74x = 384,225,239.99
  5. Step 5: Solve for x
    x = 384,225,239.99/21,753.74
  6. Step 6: Final answer
    x = 17,662.49

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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.