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Finding the Fourth Proportional to 13,269.76, 19,869.06 and 7,016.80

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Solution

The fourth proportional to 13,269.76, 19,869.06 and 7,016.80 is: 10,506.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.76 : 19,869.06 = 7,016.80 : x
  2. Step 2: Convert to fraction form
    13,269.76/19,869.06 = 7,016.80/x
  3. Step 3: Cross multiply
    13,269.76x = 19,869.06 × 7,016.80
  4. Step 4: Simplify right side
    13,269.76x = 139,417,220.21
  5. Step 5: Solve for x
    x = 139,417,220.21/13,269.76
  6. Step 6: Final answer
    x = 10,506.39

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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.