Home / 12,305.43-16,983-7,000.74

Finding the Fourth Proportional to 12,305.43, 16,983 and 7,000.74

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Solution

The fourth proportional to 12,305.43, 16,983 and 7,000.74 is: 9,661.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.43 : 16,983 = 7,000.74 : x
  2. Step 2: Convert to fraction form
    12,305.43/16,983 = 7,000.74/x
  3. Step 3: Cross multiply
    12,305.43x = 16,983 × 7,000.74
  4. Step 4: Simplify right side
    12,305.43x = 118,893,567.42
  5. Step 5: Solve for x
    x = 118,893,567.42/12,305.43
  6. Step 6: Final answer
    x = 9,661.88

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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.