Home / 31,629.28-43,641.21-18,886.59

Finding the Fourth Proportional to 31,629.28, 43,641.21 and 18,886.59

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Solution

The fourth proportional to 31,629.28, 43,641.21 and 18,886.59 is: 26,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.28 : 43,641.21 = 18,886.59 : x
  2. Step 2: Convert to fraction form
    31,629.28/43,641.21 = 18,886.59/x
  3. Step 3: Cross multiply
    31,629.28x = 43,641.21 × 18,886.59
  4. Step 4: Simplify right side
    31,629.28x = 824,233,640.37
  5. Step 5: Solve for x
    x = 824,233,640.37/31,629.28
  6. Step 6: Final answer
    x = 26,059.20

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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.