Home / 31,190.18-43,047.32-19,864.56

Finding the Fourth Proportional to 31,190.18, 43,047.32 and 19,864.56

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Solution

The fourth proportional to 31,190.18, 43,047.32 and 19,864.56 is: 27,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,190.18 : 43,047.32 = 19,864.56 : x
  2. Step 2: Convert to fraction form
    31,190.18/43,047.32 = 19,864.56/x
  3. Step 3: Cross multiply
    31,190.18x = 43,047.32 × 19,864.56
  4. Step 4: Simplify right side
    31,190.18x = 855,116,070.98
  5. Step 5: Solve for x
    x = 855,116,070.98/31,190.18
  6. Step 6: Final answer
    x = 27,416.20

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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.