Home / 35,178.64-48,540-21,028.48

Finding the Fourth Proportional to 35,178.64, 48,540 and 21,028.48

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Solution

The fourth proportional to 35,178.64, 48,540 and 21,028.48 is: 29,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,178.64 : 48,540 = 21,028.48 : x
  2. Step 2: Convert to fraction form
    35,178.64/48,540 = 21,028.48/x
  3. Step 3: Cross multiply
    35,178.64x = 48,540 × 21,028.48
  4. Step 4: Simplify right side
    35,178.64x = 1,020,722,419.20
  5. Step 5: Solve for x
    x = 1,020,722,419.20/35,178.64
  6. Step 6: Final answer
    x = 29,015.40

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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.