Home / 31,191.95-43,049.75-19,866.32

Finding the Fourth Proportional to 31,191.95, 43,049.75 and 19,866.32

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Solution

The fourth proportional to 31,191.95, 43,049.75 and 19,866.32 is: 27,418.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,191.95 : 43,049.75 = 19,866.32 : x
  2. Step 2: Convert to fraction form
    31,191.95/43,049.75 = 19,866.32/x
  3. Step 3: Cross multiply
    31,191.95x = 43,049.75 × 19,866.32
  4. Step 4: Simplify right side
    31,191.95x = 855,240,117.71
  5. Step 5: Solve for x
    x = 855,240,117.71/31,191.95
  6. Step 6: Final answer
    x = 27,418.62

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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.