Home / 31,563.76-43,559.40-18,139.36

Finding the Fourth Proportional to 31,563.76, 43,559.40 and 18,139.36

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Solution

The fourth proportional to 31,563.76, 43,559.40 and 18,139.36 is: 25,033.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,563.76 : 43,559.40 = 18,139.36 : x
  2. Step 2: Convert to fraction form
    31,563.76/43,559.40 = 18,139.36/x
  3. Step 3: Cross multiply
    31,563.76x = 43,559.40 × 18,139.36
  4. Step 4: Simplify right side
    31,563.76x = 790,139,637.98
  5. Step 5: Solve for x
    x = 790,139,637.98/31,563.76
  6. Step 6: Final answer
    x = 25,033.13

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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.