Home / 28,408.04-39,203.19-15,660.93

Finding the Fourth Proportional to 28,408.04, 39,203.19 and 15,660.93

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Solution

The fourth proportional to 28,408.04, 39,203.19 and 15,660.93 is: 21,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.04 : 39,203.19 = 15,660.93 : x
  2. Step 2: Convert to fraction form
    28,408.04/39,203.19 = 15,660.93/x
  3. Step 3: Cross multiply
    28,408.04x = 39,203.19 × 15,660.93
  4. Step 4: Simplify right side
    28,408.04x = 613,958,561.38
  5. Step 5: Solve for x
    x = 613,958,561.38/28,408.04
  6. Step 6: Final answer
    x = 21,612.14

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Half scale
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Double scale
Find fourth proportional to 28,409.04, 39,204.57 and 15,661.93
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.