Home / 14,138.38-19,511.56-7,850.76

Finding the Fourth Proportional to 14,138.38, 19,511.56 and 7,850.76

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Solution

The fourth proportional to 14,138.38, 19,511.56 and 7,850.76 is: 10,834.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.38 : 19,511.56 = 7,850.76 : x
  2. Step 2: Convert to fraction form
    14,138.38/19,511.56 = 7,850.76/x
  3. Step 3: Cross multiply
    14,138.38x = 19,511.56 × 7,850.76
  4. Step 4: Simplify right side
    14,138.38x = 153,180,574.79
  5. Step 5: Solve for x
    x = 153,180,574.79/14,138.38
  6. Step 6: Final answer
    x = 10,834.38

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Half scale
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Double scale
Find fourth proportional to 14,139.38, 19,512.94 and 7,851.76
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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.