Home / 31,504.79-43,478.07-18,755.08

Finding the Fourth Proportional to 31,504.79, 43,478.07 and 18,755.08

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Solution

The fourth proportional to 31,504.79, 43,478.07 and 18,755.08 is: 25,882.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,504.79 : 43,478.07 = 18,755.08 : x
  2. Step 2: Convert to fraction form
    31,504.79/43,478.07 = 18,755.08/x
  3. Step 3: Cross multiply
    31,504.79x = 43,478.07 × 18,755.08
  4. Step 4: Simplify right side
    31,504.79x = 815,434,681.10
  5. Step 5: Solve for x
    x = 815,434,681.10/31,504.79
  6. Step 6: Final answer
    x = 25,882.88

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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.