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Finding the Fourth Proportional to 17,388.66, 26,074.22 and 12,388.17

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Solution

The fourth proportional to 17,388.66, 26,074.22 and 12,388.17 is: 18,576.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,388.66 : 26,074.22 = 12,388.17 : x
  2. Step 2: Convert to fraction form
    17,388.66/26,074.22 = 12,388.17/x
  3. Step 3: Cross multiply
    17,388.66x = 26,074.22 × 12,388.17
  4. Step 4: Simplify right side
    17,388.66x = 323,011,905.81
  5. Step 5: Solve for x
    x = 323,011,905.81/17,388.66
  6. Step 6: Final answer
    x = 18,576.01

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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.