Home / 9,518.78-13,135.23-5,269.70

Finding the Fourth Proportional to 9,518.78, 13,135.23 and 5,269.70

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Solution

The fourth proportional to 9,518.78, 13,135.23 and 5,269.70 is: 7,271.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,518.78 : 13,135.23 = 5,269.70 : x
  2. Step 2: Convert to fraction form
    9,518.78/13,135.23 = 5,269.70/x
  3. Step 3: Cross multiply
    9,518.78x = 13,135.23 × 5,269.70
  4. Step 4: Simplify right side
    9,518.78x = 69,218,721.53
  5. Step 5: Solve for x
    x = 69,218,721.53/9,518.78
  6. Step 6: Final answer
    x = 7,271.81

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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.