Home / 31,370.70-43,272.54-18,615.48

Finding the Fourth Proportional to 31,370.70, 43,272.54 and 18,615.48

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Solution

The fourth proportional to 31,370.70, 43,272.54 and 18,615.48 is: 25,678.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,370.70 : 43,272.54 = 18,615.48 : x
  2. Step 2: Convert to fraction form
    31,370.70/43,272.54 = 18,615.48/x
  3. Step 3: Cross multiply
    31,370.70x = 43,272.54 × 18,615.48
  4. Step 4: Simplify right side
    31,370.70x = 805,539,102.92
  5. Step 5: Solve for x
    x = 805,539,102.92/31,370.70
  6. Step 6: Final answer
    x = 25,678.07

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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.