Home / 19,175.84-28,759.21-8,639.36

Finding the Fourth Proportional to 19,175.84, 28,759.21 and 8,639.36

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Solution

The fourth proportional to 19,175.84, 28,759.21 and 8,639.36 is: 12,956.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,175.84 : 28,759.21 = 8,639.36 : x
  2. Step 2: Convert to fraction form
    19,175.84/28,759.21 = 8,639.36/x
  3. Step 3: Cross multiply
    19,175.84x = 28,759.21 × 8,639.36
  4. Step 4: Simplify right side
    19,175.84x = 248,461,125.31
  5. Step 5: Solve for x
    x = 248,461,125.31/19,175.84
  6. Step 6: Final answer
    x = 12,956.99

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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.