Home / 15,226.56-21,021.90-9,930.60

Finding the Fourth Proportional to 15,226.56, 21,021.90 and 9,930.60

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Solution

The fourth proportional to 15,226.56, 21,021.90 and 9,930.60 is: 13,710.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,226.56 : 21,021.90 = 9,930.60 : x
  2. Step 2: Convert to fraction form
    15,226.56/21,021.90 = 9,930.60/x
  3. Step 3: Cross multiply
    15,226.56x = 21,021.90 × 9,930.60
  4. Step 4: Simplify right side
    15,226.56x = 208,760,080.14
  5. Step 5: Solve for x
    x = 208,760,080.14/15,226.56
  6. Step 6: Final answer
    x = 13,710.26

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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.