Home / 12,318.21-16,999.29-7,013.16

Finding the Fourth Proportional to 12,318.21, 16,999.29 and 7,013.16

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Solution

The fourth proportional to 12,318.21, 16,999.29 and 7,013.16 is: 9,678.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.21 : 16,999.29 = 7,013.16 : x
  2. Step 2: Convert to fraction form
    12,318.21/16,999.29 = 7,013.16/x
  3. Step 3: Cross multiply
    12,318.21x = 16,999.29 × 7,013.16
  4. Step 4: Simplify right side
    12,318.21x = 119,218,740.66
  5. Step 5: Solve for x
    x = 119,218,740.66/12,318.21
  6. Step 6: Final answer
    x = 9,678.25

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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.