Home / 31,779.47-43,857.76-18,351.29

Finding the Fourth Proportional to 31,779.47, 43,857.76 and 18,351.29

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Solution

The fourth proportional to 31,779.47, 43,857.76 and 18,351.29 is: 25,325.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.47 : 43,857.76 = 18,351.29 : x
  2. Step 2: Convert to fraction form
    31,779.47/43,857.76 = 18,351.29/x
  3. Step 3: Cross multiply
    31,779.47x = 43,857.76 × 18,351.29
  4. Step 4: Simplify right side
    31,779.47x = 804,846,472.51
  5. Step 5: Solve for x
    x = 804,846,472.51/31,779.47
  6. Step 6: Final answer
    x = 25,325.99

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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.