Home / 25,653.84-38,479.56-8,121.36

Finding the Fourth Proportional to 25,653.84, 38,479.56 and 8,121.36

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Solution

The fourth proportional to 25,653.84, 38,479.56 and 8,121.36 is: 12,181.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,653.84 : 38,479.56 = 8,121.36 : x
  2. Step 2: Convert to fraction form
    25,653.84/38,479.56 = 8,121.36/x
  3. Step 3: Cross multiply
    25,653.84x = 38,479.56 × 8,121.36
  4. Step 4: Simplify right side
    25,653.84x = 312,506,359.40
  5. Step 5: Solve for x
    x = 312,506,359.40/25,653.84
  6. Step 6: Final answer
    x = 12,181.66

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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.