Home / 14,128.36-19,497.36-7,840.76

Finding the Fourth Proportional to 14,128.36, 19,497.36 and 7,840.76

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Solution

The fourth proportional to 14,128.36, 19,497.36 and 7,840.76 is: 10,820.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.36 : 19,497.36 = 7,840.76 : x
  2. Step 2: Convert to fraction form
    14,128.36/19,497.36 = 7,840.76/x
  3. Step 3: Cross multiply
    14,128.36x = 19,497.36 × 7,840.76
  4. Step 4: Simplify right side
    14,128.36x = 152,874,120.39
  5. Step 5: Solve for x
    x = 152,874,120.39/14,128.36
  6. Step 6: Final answer
    x = 10,820.37

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Half scale
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Double scale
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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.