Home / 12,812.35-17,673.78-8,088.43

Finding the Fourth Proportional to 12,812.35, 17,673.78 and 8,088.43

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Solution

The fourth proportional to 12,812.35, 17,673.78 and 8,088.43 is: 11,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.35 : 17,673.78 = 8,088.43 : x
  2. Step 2: Convert to fraction form
    12,812.35/17,673.78 = 8,088.43/x
  3. Step 3: Cross multiply
    12,812.35x = 17,673.78 × 8,088.43
  4. Step 4: Simplify right side
    12,812.35x = 142,953,132.37
  5. Step 5: Solve for x
    x = 142,953,132.37/12,812.35
  6. Step 6: Final answer
    x = 11,157.45

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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.