Home / 31,389.74-43,301.84-20,047.31

Finding the Fourth Proportional to 31,389.74, 43,301.84 and 20,047.31

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Solution

The fourth proportional to 31,389.74, 43,301.84 and 20,047.31 is: 27,655.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,389.74 : 43,301.84 = 20,047.31 : x
  2. Step 2: Convert to fraction form
    31,389.74/43,301.84 = 20,047.31/x
  3. Step 3: Cross multiply
    31,389.74x = 43,301.84 × 20,047.31
  4. Step 4: Simplify right side
    31,389.74x = 868,085,093.30
  5. Step 5: Solve for x
    x = 868,085,093.30/31,389.74
  6. Step 6: Final answer
    x = 27,655.06

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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.