Home / 31,303.56-43,198.80-18,731.28

Finding the Fourth Proportional to 31,303.56, 43,198.80 and 18,731.28

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Solution

The fourth proportional to 31,303.56, 43,198.80 and 18,731.28 is: 25,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,303.56 : 43,198.80 = 18,731.28 : x
  2. Step 2: Convert to fraction form
    31,303.56/43,198.80 = 18,731.28/x
  3. Step 3: Cross multiply
    31,303.56x = 43,198.80 × 18,731.28
  4. Step 4: Simplify right side
    31,303.56x = 809,168,818.46
  5. Step 5: Solve for x
    x = 809,168,818.46/31,303.56
  6. Step 6: Final answer
    x = 25,849.10

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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.