Home / 31,620.71-43,606.91-20,293.76

Finding the Fourth Proportional to 31,620.71, 43,606.91 and 20,293.76

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Solution

The fourth proportional to 31,620.71, 43,606.91 and 20,293.76 is: 27,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,620.71 : 43,606.91 = 20,293.76 : x
  2. Step 2: Convert to fraction form
    31,620.71/43,606.91 = 20,293.76/x
  3. Step 3: Cross multiply
    31,620.71x = 43,606.91 × 20,293.76
  4. Step 4: Simplify right side
    31,620.71x = 884,948,325.63
  5. Step 5: Solve for x
    x = 884,948,325.63/31,620.71
  6. Step 6: Final answer
    x = 27,986.35

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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.