Home / 12,901.74-19,326.69-7,704.78

Finding the Fourth Proportional to 12,901.74, 19,326.69 and 7,704.78

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Solution

The fourth proportional to 12,901.74, 19,326.69 and 7,704.78 is: 11,541.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.74 : 19,326.69 = 7,704.78 : x
  2. Step 2: Convert to fraction form
    12,901.74/19,326.69 = 7,704.78/x
  3. Step 3: Cross multiply
    12,901.74x = 19,326.69 × 7,704.78
  4. Step 4: Simplify right side
    12,901.74x = 148,907,894.58
  5. Step 5: Solve for x
    x = 148,907,894.58/12,901.74
  6. Step 6: Final answer
    x = 11,541.69

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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.