Home / 31,474.08-43,435.62-20,153.16

Finding the Fourth Proportional to 31,474.08, 43,435.62 and 20,153.16

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Solution

The fourth proportional to 31,474.08, 43,435.62 and 20,153.16 is: 27,812.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,474.08 : 43,435.62 = 20,153.16 : x
  2. Step 2: Convert to fraction form
    31,474.08/43,435.62 = 20,153.16/x
  3. Step 3: Cross multiply
    31,474.08x = 43,435.62 × 20,153.16
  4. Step 4: Simplify right side
    31,474.08x = 875,364,999.56
  5. Step 5: Solve for x
    x = 875,364,999.56/31,474.08
  6. Step 6: Final answer
    x = 27,812.25

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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.