Home / 12,090.75-16,685.30-7,058.46

Finding the Fourth Proportional to 12,090.75, 16,685.30 and 7,058.46

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Solution

The fourth proportional to 12,090.75, 16,685.30 and 7,058.46 is: 9,740.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.75 : 16,685.30 = 7,058.46 : x
  2. Step 2: Convert to fraction form
    12,090.75/16,685.30 = 7,058.46/x
  3. Step 3: Cross multiply
    12,090.75x = 16,685.30 × 7,058.46
  4. Step 4: Simplify right side
    12,090.75x = 117,772,487.35
  5. Step 5: Solve for x
    x = 117,772,487.35/12,090.75
  6. Step 6: Final answer
    x = 9,740.71

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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.