Home / 15,090.56-20,825.11-9,126.21

Finding the Fourth Proportional to 15,090.56, 20,825.11 and 9,126.21

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Solution

The fourth proportional to 15,090.56, 20,825.11 and 9,126.21 is: 12,594.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,090.56 : 20,825.11 = 9,126.21 : x
  2. Step 2: Convert to fraction form
    15,090.56/20,825.11 = 9,126.21/x
  3. Step 3: Cross multiply
    15,090.56x = 20,825.11 × 9,126.21
  4. Step 4: Simplify right side
    15,090.56x = 190,054,327.13
  5. Step 5: Solve for x
    x = 190,054,327.13/15,090.56
  6. Step 6: Final answer
    x = 12,594.25

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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.