Home / 15,090.20-20,825.76-8,376.52

Finding the Fourth Proportional to 15,090.20, 20,825.76 and 8,376.52

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Solution

The fourth proportional to 15,090.20, 20,825.76 and 8,376.52 is: 11,560.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,090.20 : 20,825.76 = 8,376.52 : x
  2. Step 2: Convert to fraction form
    15,090.20/20,825.76 = 8,376.52/x
  3. Step 3: Cross multiply
    15,090.20x = 20,825.76 × 8,376.52
  4. Step 4: Simplify right side
    15,090.20x = 174,447,395.16
  5. Step 5: Solve for x
    x = 174,447,395.16/15,090.20
  6. Step 6: Final answer
    x = 11,560.31

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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.