Home / 31,291.79-43,182.71-18,551.21

Finding the Fourth Proportional to 31,291.79, 43,182.71 and 18,551.21

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Solution

The fourth proportional to 31,291.79, 43,182.71 and 18,551.21 is: 25,600.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,291.79 : 43,182.71 = 18,551.21 : x
  2. Step 2: Convert to fraction form
    31,291.79/43,182.71 = 18,551.21/x
  3. Step 3: Cross multiply
    31,291.79x = 43,182.71 × 18,551.21
  4. Step 4: Simplify right side
    31,291.79x = 801,091,525.60
  5. Step 5: Solve for x
    x = 801,091,525.60/31,291.79
  6. Step 6: Final answer
    x = 25,600.69

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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.