Home / 15,622.56-21,557.62-8,907.68

Finding the Fourth Proportional to 15,622.56, 21,557.62 and 8,907.68

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Solution

The fourth proportional to 15,622.56, 21,557.62 and 8,907.68 is: 12,291.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,622.56 : 21,557.62 = 8,907.68 : x
  2. Step 2: Convert to fraction form
    15,622.56/21,557.62 = 8,907.68/x
  3. Step 3: Cross multiply
    15,622.56x = 21,557.62 × 8,907.68
  4. Step 4: Simplify right side
    15,622.56x = 192,028,380.52
  5. Step 5: Solve for x
    x = 192,028,380.52/15,622.56
  6. Step 6: Final answer
    x = 12,291.74

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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.