Home / 31,212.40-43,048.92-18,623.92

Finding the Fourth Proportional to 31,212.40, 43,048.92 and 18,623.92

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Solution

The fourth proportional to 31,212.40, 43,048.92 and 18,623.92 is: 25,686.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,212.40 : 43,048.92 = 18,623.92 : x
  2. Step 2: Convert to fraction form
    31,212.40/43,048.92 = 18,623.92/x
  3. Step 3: Cross multiply
    31,212.40x = 43,048.92 × 18,623.92
  4. Step 4: Simplify right side
    31,212.40x = 801,739,642.17
  5. Step 5: Solve for x
    x = 801,739,642.17/31,212.40
  6. Step 6: Final answer
    x = 25,686.57

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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.