Home / 12,157.23-16,783.17-7,685.61

Finding the Fourth Proportional to 12,157.23, 16,783.17 and 7,685.61

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Solution

The fourth proportional to 12,157.23, 16,783.17 and 7,685.61 is: 10,610.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.23 : 16,783.17 = 7,685.61 : x
  2. Step 2: Convert to fraction form
    12,157.23/16,783.17 = 7,685.61/x
  3. Step 3: Cross multiply
    12,157.23x = 16,783.17 × 7,685.61
  4. Step 4: Simplify right side
    12,157.23x = 128,988,899.18
  5. Step 5: Solve for x
    x = 128,988,899.18/12,157.23
  6. Step 6: Final answer
    x = 10,610.06

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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.