Home / 31,655.20-43,685.04-18,231.16

Finding the Fourth Proportional to 31,655.20, 43,685.04 and 18,231.16

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Solution

The fourth proportional to 31,655.20, 43,685.04 and 18,231.16 is: 25,159.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,655.20 : 43,685.04 = 18,231.16 : x
  2. Step 2: Convert to fraction form
    31,655.20/43,685.04 = 18,231.16/x
  3. Step 3: Cross multiply
    31,655.20x = 43,685.04 × 18,231.16
  4. Step 4: Simplify right side
    31,655.20x = 796,428,953.85
  5. Step 5: Solve for x
    x = 796,428,953.85/31,655.20
  6. Step 6: Final answer
    x = 25,159.50

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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.