Home / 13,269.78-18,311.83-7,301.40

Finding the Fourth Proportional to 13,269.78, 18,311.83 and 7,301.40

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Solution

The fourth proportional to 13,269.78, 18,311.83 and 7,301.40 is: 10,075.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.78 : 18,311.83 = 7,301.40 : x
  2. Step 2: Convert to fraction form
    13,269.78/18,311.83 = 7,301.40/x
  3. Step 3: Cross multiply
    13,269.78x = 18,311.83 × 7,301.40
  4. Step 4: Simplify right side
    13,269.78x = 133,701,995.56
  5. Step 5: Solve for x
    x = 133,701,995.56/13,269.78
  6. Step 6: Final answer
    x = 10,075.68

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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.