Home / 31,354.09-43,265.79-18,605.08

Finding the Fourth Proportional to 31,354.09, 43,265.79 and 18,605.08

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Solution

The fourth proportional to 31,354.09, 43,265.79 and 18,605.08 is: 25,673.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,354.09 : 43,265.79 = 18,605.08 : x
  2. Step 2: Convert to fraction form
    31,354.09/43,265.79 = 18,605.08/x
  3. Step 3: Cross multiply
    31,354.09x = 43,265.79 × 18,605.08
  4. Step 4: Simplify right side
    31,354.09x = 804,963,484.21
  5. Step 5: Solve for x
    x = 804,963,484.21/31,354.09
  6. Step 6: Final answer
    x = 25,673.32

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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.