Home / 19,712.21-29,568.38-4,921.12

Finding the Fourth Proportional to 19,712.21, 29,568.38 and 4,921.12

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Solution

The fourth proportional to 19,712.21, 29,568.38 and 4,921.12 is: 7,381.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,712.21 : 29,568.38 = 4,921.12 : x
  2. Step 2: Convert to fraction form
    19,712.21/29,568.38 = 4,921.12/x
  3. Step 3: Cross multiply
    19,712.21x = 29,568.38 × 4,921.12
  4. Step 4: Simplify right side
    19,712.21x = 145,509,546.19
  5. Step 5: Solve for x
    x = 145,509,546.19/19,712.21
  6. Step 6: Final answer
    x = 7,381.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.