Home / 25,015.64-34,521.31-13,685.36

Finding the Fourth Proportional to 25,015.64, 34,521.31 and 13,685.36

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Solution

The fourth proportional to 25,015.64, 34,521.31 and 13,685.36 is: 18,885.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,015.64 : 34,521.31 = 13,685.36 : x
  2. Step 2: Convert to fraction form
    25,015.64/34,521.31 = 13,685.36/x
  3. Step 3: Cross multiply
    25,015.64x = 34,521.31 × 13,685.36
  4. Step 4: Simplify right side
    25,015.64x = 472,436,348.20
  5. Step 5: Solve for x
    x = 472,436,348.20/25,015.64
  6. Step 6: Final answer
    x = 18,885.64

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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.