Home / 15,299.82-21,113.87-8,585.60

Finding the Fourth Proportional to 15,299.82, 21,113.87 and 8,585.60

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Solution

The fourth proportional to 15,299.82, 21,113.87 and 8,585.60 is: 11,848.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.82 : 21,113.87 = 8,585.60 : x
  2. Step 2: Convert to fraction form
    15,299.82/21,113.87 = 8,585.60/x
  3. Step 3: Cross multiply
    15,299.82x = 21,113.87 × 8,585.60
  4. Step 4: Simplify right side
    15,299.82x = 181,275,093.77
  5. Step 5: Solve for x
    x = 181,275,093.77/15,299.82
  6. Step 6: Final answer
    x = 11,848.18

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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.