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Finding the Fourth Proportional to 13,297, 18,350.20 and 7,328.74

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Solution

The fourth proportional to 13,297, 18,350.20 and 7,328.74 is: 10,113.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297 : 18,350.20 = 7,328.74 : x
  2. Step 2: Convert to fraction form
    13,297/18,350.20 = 7,328.74/x
  3. Step 3: Cross multiply
    13,297x = 18,350.20 × 7,328.74
  4. Step 4: Simplify right side
    13,297x = 134,483,844.75
  5. Step 5: Solve for x
    x = 134,483,844.75/13,297
  6. Step 6: Final answer
    x = 10,113.85

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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.