Home / 43,420.64-65,087.20-17,115.20

Finding the Fourth Proportional to 43,420.64, 65,087.20 and 17,115.20

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Solution

The fourth proportional to 43,420.64, 65,087.20 and 17,115.20 is: 25,655.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,420.64 : 65,087.20 = 17,115.20 : x
  2. Step 2: Convert to fraction form
    43,420.64/65,087.20 = 17,115.20/x
  3. Step 3: Cross multiply
    43,420.64x = 65,087.20 × 17,115.20
  4. Step 4: Simplify right side
    43,420.64x = 1,113,980,445.44
  5. Step 5: Solve for x
    x = 1,113,980,445.44/43,420.64
  6. Step 6: Final answer
    x = 25,655.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.