Home / 15,629.36-21,568.68-8,555.63

Finding the Fourth Proportional to 15,629.36, 21,568.68 and 8,555.63

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Solution

The fourth proportional to 15,629.36, 21,568.68 and 8,555.63 is: 11,806.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.36 : 21,568.68 = 8,555.63 : x
  2. Step 2: Convert to fraction form
    15,629.36/21,568.68 = 8,555.63/x
  3. Step 3: Cross multiply
    15,629.36x = 21,568.68 × 8,555.63
  4. Step 4: Simplify right side
    15,629.36x = 184,533,537.83
  5. Step 5: Solve for x
    x = 184,533,537.83/15,629.36
  6. Step 6: Final answer
    x = 11,806.86

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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.