Home / 38,142.37-52,636.38-21,146.17

Finding the Fourth Proportional to 38,142.37, 52,636.38 and 21,146.17

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Solution

The fourth proportional to 38,142.37, 52,636.38 and 21,146.17 is: 29,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.37 : 52,636.38 = 21,146.17 : x
  2. Step 2: Convert to fraction form
    38,142.37/52,636.38 = 21,146.17/x
  3. Step 3: Cross multiply
    38,142.37x = 52,636.38 × 21,146.17
  4. Step 4: Simplify right side
    38,142.37x = 1,113,057,916.16
  5. Step 5: Solve for x
    x = 1,113,057,916.16/38,142.37
  6. Step 6: Final answer
    x = 29,181.67

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Half scale
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Double scale
Find fourth proportional to 38,143.37, 52,637.76 and 21,147.17
Similar ratio
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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.