Home / 31,370.49-43,268.58-21,295.71

Finding the Fourth Proportional to 31,370.49, 43,268.58 and 21,295.71

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Solution

The fourth proportional to 31,370.49, 43,268.58 and 21,295.71 is: 29,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,370.49 : 43,268.58 = 21,295.71 : x
  2. Step 2: Convert to fraction form
    31,370.49/43,268.58 = 21,295.71/x
  3. Step 3: Cross multiply
    31,370.49x = 43,268.58 × 21,295.71
  4. Step 4: Simplify right side
    31,370.49x = 921,435,131.79
  5. Step 5: Solve for x
    x = 921,435,131.79/31,370.49
  6. Step 6: Final answer
    x = 29,372.67

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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.