Home / 21,086.19-31,629.29-5,503.68

Finding the Fourth Proportional to 21,086.19, 31,629.29 and 5,503.68

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Solution

The fourth proportional to 21,086.19, 31,629.29 and 5,503.68 is: 8,255.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.19 : 31,629.29 = 5,503.68 : x
  2. Step 2: Convert to fraction form
    21,086.19/31,629.29 = 5,503.68/x
  3. Step 3: Cross multiply
    21,086.19x = 31,629.29 × 5,503.68
  4. Step 4: Simplify right side
    21,086.19x = 174,077,463.27
  5. Step 5: Solve for x
    x = 174,077,463.27/21,086.19
  6. Step 6: Final answer
    x = 8,255.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.