Home / 15,269.45-21,072.42-8,555.36

Finding the Fourth Proportional to 15,269.45, 21,072.42 and 8,555.36

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Solution

The fourth proportional to 15,269.45, 21,072.42 and 8,555.36 is: 11,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,269.45 : 21,072.42 = 8,555.36 : x
  2. Step 2: Convert to fraction form
    15,269.45/21,072.42 = 8,555.36/x
  3. Step 3: Cross multiply
    15,269.45x = 21,072.42 × 8,555.36
  4. Step 4: Simplify right side
    15,269.45x = 180,282,033.81
  5. Step 5: Solve for x
    x = 180,282,033.81/15,269.45
  6. Step 6: Final answer
    x = 11,806.72

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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.