Home / 30,568.12-42,168.48-19,963.96

Finding the Fourth Proportional to 30,568.12, 42,168.48 and 19,963.96

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Solution

The fourth proportional to 30,568.12, 42,168.48 and 19,963.96 is: 27,540.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,568.12 : 42,168.48 = 19,963.96 : x
  2. Step 2: Convert to fraction form
    30,568.12/42,168.48 = 19,963.96/x
  3. Step 3: Cross multiply
    30,568.12x = 42,168.48 × 19,963.96
  4. Step 4: Simplify right side
    30,568.12x = 841,849,847.98
  5. Step 5: Solve for x
    x = 841,849,847.98/30,568.12
  6. Step 6: Final answer
    x = 27,540.13

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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.