Home / 13,396.72-18,497.06-8,931

Finding the Fourth Proportional to 13,396.72, 18,497.06 and 8,931

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Solution

The fourth proportional to 13,396.72, 18,497.06 and 8,931 is: 12,331.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.72 : 18,497.06 = 8,931 : x
  2. Step 2: Convert to fraction form
    13,396.72/18,497.06 = 8,931/x
  3. Step 3: Cross multiply
    13,396.72x = 18,497.06 × 8,931
  4. Step 4: Simplify right side
    13,396.72x = 165,197,242.86
  5. Step 5: Solve for x
    x = 165,197,242.86/13,396.72
  6. Step 6: Final answer
    x = 12,331.17

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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.