Home / 29,268.71-40,390.82-15,840.06

Finding the Fourth Proportional to 29,268.71, 40,390.82 and 15,840.06

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Solution

The fourth proportional to 29,268.71, 40,390.82 and 15,840.06 is: 21,859.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,268.71 : 40,390.82 = 15,840.06 : x
  2. Step 2: Convert to fraction form
    29,268.71/40,390.82 = 15,840.06/x
  3. Step 3: Cross multiply
    29,268.71x = 40,390.82 × 15,840.06
  4. Step 4: Simplify right side
    29,268.71x = 639,793,012.25
  5. Step 5: Solve for x
    x = 639,793,012.25/29,268.71
  6. Step 6: Final answer
    x = 21,859.28

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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.