Home / 31,065.32-42,864.26-19,736.66

Finding the Fourth Proportional to 31,065.32, 42,864.26 and 19,736.66

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Solution

The fourth proportional to 31,065.32, 42,864.26 and 19,736.66 is: 27,232.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,065.32 : 42,864.26 = 19,736.66 : x
  2. Step 2: Convert to fraction form
    31,065.32/42,864.26 = 19,736.66/x
  3. Step 3: Cross multiply
    31,065.32x = 42,864.26 × 19,736.66
  4. Step 4: Simplify right side
    31,065.32x = 845,997,334.25
  5. Step 5: Solve for x
    x = 845,997,334.25/31,065.32
  6. Step 6: Final answer
    x = 27,232.85

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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.