Home / 12,318.23-16,999.20-7,013.36

Finding the Fourth Proportional to 12,318.23, 16,999.20 and 7,013.36

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Solution

The fourth proportional to 12,318.23, 16,999.20 and 7,013.36 is: 9,678.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.23 : 16,999.20 = 7,013.36 : x
  2. Step 2: Convert to fraction form
    12,318.23/16,999.20 = 7,013.36/x
  3. Step 3: Cross multiply
    12,318.23x = 16,999.20 × 7,013.36
  4. Step 4: Simplify right side
    12,318.23x = 119,221,424.32
  5. Step 5: Solve for x
    x = 119,221,424.32/12,318.23
  6. Step 6: Final answer
    x = 9,678.46

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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.