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Finding the Fourth Proportional to 11,457.70, 17,186.55 and 5,625.70

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Solution

The fourth proportional to 11,457.70, 17,186.55 and 5,625.70 is: 8,438.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,457.70 : 17,186.55 = 5,625.70 : x
  2. Step 2: Convert to fraction form
    11,457.70/17,186.55 = 5,625.70/x
  3. Step 3: Cross multiply
    11,457.70x = 17,186.55 × 5,625.70
  4. Step 4: Simplify right side
    11,457.70x = 96,686,374.34
  5. Step 5: Solve for x
    x = 96,686,374.34/11,457.70
  6. Step 6: Final answer
    x = 8,438.55

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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.