Home / 12,130.77-16,740.39-6,825.63

Finding the Fourth Proportional to 12,130.77, 16,740.39 and 6,825.63

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Solution

The fourth proportional to 12,130.77, 16,740.39 and 6,825.63 is: 9,419.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.77 : 16,740.39 = 6,825.63 : x
  2. Step 2: Convert to fraction form
    12,130.77/16,740.39 = 6,825.63/x
  3. Step 3: Cross multiply
    12,130.77x = 16,740.39 × 6,825.63
  4. Step 4: Simplify right side
    12,130.77x = 114,263,708.20
  5. Step 5: Solve for x
    x = 114,263,708.20/12,130.77
  6. Step 6: Final answer
    x = 9,419.33

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Half scale
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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.