Home / 31,646.12-43,707.49-21,557.03

Finding the Fourth Proportional to 31,646.12, 43,707.49 and 21,557.03

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Solution

The fourth proportional to 31,646.12, 43,707.49 and 21,557.03 is: 29,773.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,646.12 : 43,707.49 = 21,557.03 : x
  2. Step 2: Convert to fraction form
    31,646.12/43,707.49 = 21,557.03/x
  3. Step 3: Cross multiply
    31,646.12x = 43,707.49 × 21,557.03
  4. Step 4: Simplify right side
    31,646.12x = 942,203,400.72
  5. Step 5: Solve for x
    x = 942,203,400.72/31,646.12
  6. Step 6: Final answer
    x = 29,773.11

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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.