Home / 15,299.66-21,114.60-9,015.68

Finding the Fourth Proportional to 15,299.66, 21,114.60 and 9,015.68

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Solution

The fourth proportional to 15,299.66, 21,114.60 and 9,015.68 is: 12,442.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.66 : 21,114.60 = 9,015.68 : x
  2. Step 2: Convert to fraction form
    15,299.66/21,114.60 = 9,015.68/x
  3. Step 3: Cross multiply
    15,299.66x = 21,114.60 × 9,015.68
  4. Step 4: Simplify right side
    15,299.66x = 190,362,476.93
  5. Step 5: Solve for x
    x = 190,362,476.93/15,299.66
  6. Step 6: Final answer
    x = 12,442.27

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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.