Home / 12,318.37-16,999.40-7,013.18

Finding the Fourth Proportional to 12,318.37, 16,999.40 and 7,013.18

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Solution

The fourth proportional to 12,318.37, 16,999.40 and 7,013.18 is: 9,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.37 : 16,999.40 = 7,013.18 : x
  2. Step 2: Convert to fraction form
    12,318.37/16,999.40 = 7,013.18/x
  3. Step 3: Cross multiply
    12,318.37x = 16,999.40 × 7,013.18
  4. Step 4: Simplify right side
    12,318.37x = 119,219,912.12
  5. Step 5: Solve for x
    x = 119,219,912.12/12,318.37
  6. Step 6: Final answer
    x = 9,678.22

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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.