Home / 15,617.32-21,551.82-8,543.60

Finding the Fourth Proportional to 15,617.32, 21,551.82 and 8,543.60

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Solution

The fourth proportional to 15,617.32, 21,551.82 and 8,543.60 is: 11,790.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.32 : 21,551.82 = 8,543.60 : x
  2. Step 2: Convert to fraction form
    15,617.32/21,551.82 = 8,543.60/x
  3. Step 3: Cross multiply
    15,617.32x = 21,551.82 × 8,543.60
  4. Step 4: Simplify right side
    15,617.32x = 184,130,129.35
  5. Step 5: Solve for x
    x = 184,130,129.35/15,617.32
  6. Step 6: Final answer
    x = 11,790.12

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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.