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Finding the Fourth Proportional to 13,297, 18,343.38 and 10,647.76

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Solution

The fourth proportional to 13,297, 18,343.38 and 10,647.76 is: 14,688.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297 : 18,343.38 = 10,647.76 : x
  2. Step 2: Convert to fraction form
    13,297/18,343.38 = 10,647.76/x
  3. Step 3: Cross multiply
    13,297x = 18,343.38 × 10,647.76
  4. Step 4: Simplify right side
    13,297x = 195,315,907.83
  5. Step 5: Solve for x
    x = 195,315,907.83/13,297
  6. Step 6: Final answer
    x = 14,688.72

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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.