Home / 21,754.16-30,018.21-12,799.70

Finding the Fourth Proportional to 21,754.16, 30,018.21 and 12,799.70

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Solution

The fourth proportional to 21,754.16, 30,018.21 and 12,799.70 is: 17,662.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,754.16 : 30,018.21 = 12,799.70 : x
  2. Step 2: Convert to fraction form
    21,754.16/30,018.21 = 12,799.70/x
  3. Step 3: Cross multiply
    21,754.16x = 30,018.21 × 12,799.70
  4. Step 4: Simplify right side
    21,754.16x = 384,224,082.54
  5. Step 5: Solve for x
    x = 384,224,082.54/21,754.16
  6. Step 6: Final answer
    x = 17,662.10

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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.