Home / 13,648.64-18,851.28-9,165.56

Finding the Fourth Proportional to 13,648.64, 18,851.28 and 9,165.56

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Solution

The fourth proportional to 13,648.64, 18,851.28 and 9,165.56 is: 12,659.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,648.64 : 18,851.28 = 9,165.56 : x
  2. Step 2: Convert to fraction form
    13,648.64/18,851.28 = 9,165.56/x
  3. Step 3: Cross multiply
    13,648.64x = 18,851.28 × 9,165.56
  4. Step 4: Simplify right side
    13,648.64x = 172,782,537.92
  5. Step 5: Solve for x
    x = 172,782,537.92/13,648.64
  6. Step 6: Final answer
    x = 12,659.32

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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.