Home / 31,400.36-43,330.02-17,971.88

Finding the Fourth Proportional to 31,400.36, 43,330.02 and 17,971.88

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Solution

The fourth proportional to 31,400.36, 43,330.02 and 17,971.88 is: 24,799.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.36 : 43,330.02 = 17,971.88 : x
  2. Step 2: Convert to fraction form
    31,400.36/43,330.02 = 17,971.88/x
  3. Step 3: Cross multiply
    31,400.36x = 43,330.02 × 17,971.88
  4. Step 4: Simplify right side
    31,400.36x = 778,721,919.84
  5. Step 5: Solve for x
    x = 778,721,919.84/31,400.36
  6. Step 6: Final answer
    x = 24,799.78

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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.