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Finding the Fourth Proportional to 13,297.80, 19,911.60 and 10,652.88

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Solution

The fourth proportional to 13,297.80, 19,911.60 and 10,652.88 is: 15,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.80 : 19,911.60 = 10,652.88 : x
  2. Step 2: Convert to fraction form
    13,297.80/19,911.60 = 10,652.88/x
  3. Step 3: Cross multiply
    13,297.80x = 19,911.60 × 10,652.88
  4. Step 4: Simplify right side
    13,297.80x = 212,115,885.41
  5. Step 5: Solve for x
    x = 212,115,885.41/13,297.80
  6. Step 6: Final answer
    x = 15,951.20

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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.