Home / 31,659.56-43,678.95-18,903.88

Finding the Fourth Proportional to 31,659.56, 43,678.95 and 18,903.88

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Solution

The fourth proportional to 31,659.56, 43,678.95 and 18,903.88 is: 26,080.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,659.56 : 43,678.95 = 18,903.88 : x
  2. Step 2: Convert to fraction form
    31,659.56/43,678.95 = 18,903.88/x
  3. Step 3: Cross multiply
    31,659.56x = 43,678.95 × 18,903.88
  4. Step 4: Simplify right side
    31,659.56x = 825,701,613.04
  5. Step 5: Solve for x
    x = 825,701,613.04/31,659.56
  6. Step 6: Final answer
    x = 26,080.64

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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.