Home / 15,271.94-21,074.91-8,557.85

Finding the Fourth Proportional to 15,271.94, 21,074.91 and 8,557.85

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Solution

The fourth proportional to 15,271.94, 21,074.91 and 8,557.85 is: 11,809.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.94 : 21,074.91 = 8,557.85 : x
  2. Step 2: Convert to fraction form
    15,271.94/21,074.91 = 8,557.85/x
  3. Step 3: Cross multiply
    15,271.94x = 21,074.91 × 8,557.85
  4. Step 4: Simplify right side
    15,271.94x = 180,355,918.54
  5. Step 5: Solve for x
    x = 180,355,918.54/15,271.94
  6. Step 6: Final answer
    x = 11,809.63

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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.