Home / 21,112.11-29,101.14-16,628.76

Finding the Fourth Proportional to 21,112.11, 29,101.14 and 16,628.76

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Solution

The fourth proportional to 21,112.11, 29,101.14 and 16,628.76 is: 22,921.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.11 : 29,101.14 = 16,628.76 : x
  2. Step 2: Convert to fraction form
    21,112.11/29,101.14 = 16,628.76/x
  3. Step 3: Cross multiply
    21,112.11x = 29,101.14 × 16,628.76
  4. Step 4: Simplify right side
    21,112.11x = 483,915,872.79
  5. Step 5: Solve for x
    x = 483,915,872.79/21,112.11
  6. Step 6: Final answer
    x = 22,921.25

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Half scale
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Double scale
Find fourth proportional to 21,113.11, 29,102.52 and 16,629.76
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.