Home / 31,349.10-43,268.66-21,672.16

Finding the Fourth Proportional to 31,349.10, 43,268.66 and 21,672.16

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Solution

The fourth proportional to 31,349.10, 43,268.66 and 21,672.16 is: 29,912.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,349.10 : 43,268.66 = 21,672.16 : x
  2. Step 2: Convert to fraction form
    31,349.10/43,268.66 = 21,672.16/x
  3. Step 3: Cross multiply
    31,349.10x = 43,268.66 × 21,672.16
  4. Step 4: Simplify right side
    31,349.10x = 937,725,322.51
  5. Step 5: Solve for x
    x = 937,725,322.51/31,349.10
  6. Step 6: Final answer
    x = 29,912.35

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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.