Home / 12,981.41-17,904.15-9,396.90

Finding the Fourth Proportional to 12,981.41, 17,904.15 and 9,396.90

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Solution

The fourth proportional to 12,981.41, 17,904.15 and 9,396.90 is: 12,960.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.41 : 17,904.15 = 9,396.90 : x
  2. Step 2: Convert to fraction form
    12,981.41/17,904.15 = 9,396.90/x
  3. Step 3: Cross multiply
    12,981.41x = 17,904.15 × 9,396.90
  4. Step 4: Simplify right side
    12,981.41x = 168,243,507.14
  5. Step 5: Solve for x
    x = 168,243,507.14/12,981.41
  6. Step 6: Final answer
    x = 12,960.34

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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.