Home / 12,127.19-18,190.77-9,666.81

Finding the Fourth Proportional to 12,127.19, 18,190.77 and 9,666.81

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Solution

The fourth proportional to 12,127.19, 18,190.77 and 9,666.81 is: 14,500.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.19 : 18,190.77 = 9,666.81 : x
  2. Step 2: Convert to fraction form
    12,127.19/18,190.77 = 9,666.81/x
  3. Step 3: Cross multiply
    12,127.19x = 18,190.77 × 9,666.81
  4. Step 4: Simplify right side
    12,127.19x = 175,846,717.34
  5. Step 5: Solve for x
    x = 175,846,717.34/12,127.19
  6. Step 6: Final answer
    x = 14,500.21

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Half scale
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Double scale
Find fourth proportional to 12,128.19, 18,192.27 and 9,667.81
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.