Home / 16,838.70-23,237.39-10,128.21

Finding the Fourth Proportional to 16,838.70, 23,237.39 and 10,128.21

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Solution

The fourth proportional to 16,838.70, 23,237.39 and 10,128.21 is: 13,976.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,838.70 : 23,237.39 = 10,128.21 : x
  2. Step 2: Convert to fraction form
    16,838.70/23,237.39 = 10,128.21/x
  3. Step 3: Cross multiply
    16,838.70x = 23,237.39 × 10,128.21
  4. Step 4: Simplify right side
    16,838.70x = 235,353,165.77
  5. Step 5: Solve for x
    x = 235,353,165.77/16,838.70
  6. Step 6: Final answer
    x = 13,976.92

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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.