Home / 15,016.94-20,703.60-12,318.28

Finding the Fourth Proportional to 15,016.94, 20,703.60 and 12,318.28

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Solution

The fourth proportional to 15,016.94, 20,703.60 and 12,318.28 is: 16,982.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.94 : 20,703.60 = 12,318.28 : x
  2. Step 2: Convert to fraction form
    15,016.94/20,703.60 = 12,318.28/x
  3. Step 3: Cross multiply
    15,016.94x = 20,703.60 × 12,318.28
  4. Step 4: Simplify right side
    15,016.94x = 255,032,690.05
  5. Step 5: Solve for x
    x = 255,032,690.05/15,016.94
  6. Step 6: Final answer
    x = 16,982.99

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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.