Home / 31,611.51-43,628.45-18,865.23

Finding the Fourth Proportional to 31,611.51, 43,628.45 and 18,865.23

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Solution

The fourth proportional to 31,611.51, 43,628.45 and 18,865.23 is: 26,036.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,611.51 : 43,628.45 = 18,865.23 : x
  2. Step 2: Convert to fraction form
    31,611.51/43,628.45 = 18,865.23/x
  3. Step 3: Cross multiply
    31,611.51x = 43,628.45 × 18,865.23
  4. Step 4: Simplify right side
    31,611.51x = 823,060,743.79
  5. Step 5: Solve for x
    x = 823,060,743.79/31,611.51
  6. Step 6: Final answer
    x = 26,036.74

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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.