Home / 12,701.30-19,033.79-7,142.98

Finding the Fourth Proportional to 12,701.30, 19,033.79 and 7,142.98

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Solution

The fourth proportional to 12,701.30, 19,033.79 and 7,142.98 is: 10,704.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,701.30 : 19,033.79 = 7,142.98 : x
  2. Step 2: Convert to fraction form
    12,701.30/19,033.79 = 7,142.98/x
  3. Step 3: Cross multiply
    12,701.30x = 19,033.79 × 7,142.98
  4. Step 4: Simplify right side
    12,701.30x = 135,957,981.29
  5. Step 5: Solve for x
    x = 135,957,981.29/12,701.30
  6. Step 6: Final answer
    x = 10,704.26

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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.