Home / 15,090.08-20,825.55-8,376.39

Finding the Fourth Proportional to 15,090.08, 20,825.55 and 8,376.39

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Solution

The fourth proportional to 15,090.08, 20,825.55 and 8,376.39 is: 11,560.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,090.08 : 20,825.55 = 8,376.39 : x
  2. Step 2: Convert to fraction form
    15,090.08/20,825.55 = 8,376.39/x
  3. Step 3: Cross multiply
    15,090.08x = 20,825.55 × 8,376.39
  4. Step 4: Simplify right side
    15,090.08x = 174,442,928.76
  5. Step 5: Solve for x
    x = 174,442,928.76/15,090.08
  6. Step 6: Final answer
    x = 11,560.11

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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.