Home / 15,617.45-21,552.58-8,543.87

Finding the Fourth Proportional to 15,617.45, 21,552.58 and 8,543.87

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Solution

The fourth proportional to 15,617.45, 21,552.58 and 8,543.87 is: 11,790.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.45 : 21,552.58 = 8,543.87 : x
  2. Step 2: Convert to fraction form
    15,617.45/21,552.58 = 8,543.87/x
  3. Step 3: Cross multiply
    15,617.45x = 21,552.58 × 8,543.87
  4. Step 4: Simplify right side
    15,617.45x = 184,142,291.20
  5. Step 5: Solve for x
    x = 184,142,291.20/15,617.45
  6. Step 6: Final answer
    x = 11,790.80

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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.