Home / 10,143.73-13,981.62-6,785.34

Finding the Fourth Proportional to 10,143.73, 13,981.62 and 6,785.34

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Solution

The fourth proportional to 10,143.73, 13,981.62 and 6,785.34 is: 9,352.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.73 : 13,981.62 = 6,785.34 : x
  2. Step 2: Convert to fraction form
    10,143.73/13,981.62 = 6,785.34/x
  3. Step 3: Cross multiply
    10,143.73x = 13,981.62 × 6,785.34
  4. Step 4: Simplify right side
    10,143.73x = 94,870,045.45
  5. Step 5: Solve for x
    x = 94,870,045.45/10,143.73
  6. Step 6: Final answer
    x = 9,352.58

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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.