Home / 31,827.28-43,907.52-21,206.56

Finding the Fourth Proportional to 31,827.28, 43,907.52 and 21,206.56

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Solution

The fourth proportional to 31,827.28, 43,907.52 and 21,206.56 is: 29,255.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,827.28 : 43,907.52 = 21,206.56 : x
  2. Step 2: Convert to fraction form
    31,827.28/43,907.52 = 21,206.56/x
  3. Step 3: Cross multiply
    31,827.28x = 43,907.52 × 21,206.56
  4. Step 4: Simplify right side
    31,827.28x = 931,127,457.33
  5. Step 5: Solve for x
    x = 931,127,457.33/31,827.28
  6. Step 6: Final answer
    x = 29,255.64

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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.