Home / 15,617.12-21,551.64-8,543.54

Finding the Fourth Proportional to 15,617.12, 21,551.64 and 8,543.54

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Solution

The fourth proportional to 15,617.12, 21,551.64 and 8,543.54 is: 11,790.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.12 : 21,551.64 = 8,543.54 : x
  2. Step 2: Convert to fraction form
    15,617.12/21,551.64 = 8,543.54/x
  3. Step 3: Cross multiply
    15,617.12x = 21,551.64 × 8,543.54
  4. Step 4: Simplify right side
    15,617.12x = 184,127,190.65
  5. Step 5: Solve for x
    x = 184,127,190.65/15,617.12
  6. Step 6: Final answer
    x = 11,790.09

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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.