Home / 31,718.56-43,780.64-19,144.12

Finding the Fourth Proportional to 31,718.56, 43,780.64 and 19,144.12

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Solution

The fourth proportional to 31,718.56, 43,780.64 and 19,144.12 is: 26,424.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.56 : 43,780.64 = 19,144.12 : x
  2. Step 2: Convert to fraction form
    31,718.56/43,780.64 = 19,144.12/x
  3. Step 3: Cross multiply
    31,718.56x = 43,780.64 × 19,144.12
  4. Step 4: Simplify right side
    31,718.56x = 838,141,825.84
  5. Step 5: Solve for x
    x = 838,141,825.84/31,718.56
  6. Step 6: Final answer
    x = 26,424.33

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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.