Home / 9,820.64-13,539.48-8,135.84

Finding the Fourth Proportional to 9,820.64, 13,539.48 and 8,135.84

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Solution

The fourth proportional to 9,820.64, 13,539.48 and 8,135.84 is: 11,216.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,820.64 : 13,539.48 = 8,135.84 : x
  2. Step 2: Convert to fraction form
    9,820.64/13,539.48 = 8,135.84/x
  3. Step 3: Cross multiply
    9,820.64x = 13,539.48 × 8,135.84
  4. Step 4: Simplify right side
    9,820.64x = 110,155,042.96
  5. Step 5: Solve for x
    x = 110,155,042.96/9,820.64
  6. Step 6: Final answer
    x = 11,216.69

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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.