Home / 12,318.18-16,999.23-7,012.99

Finding the Fourth Proportional to 12,318.18, 16,999.23 and 7,012.99

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Solution

The fourth proportional to 12,318.18, 16,999.23 and 7,012.99 is: 9,678.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.18 : 16,999.23 = 7,012.99 : x
  2. Step 2: Convert to fraction form
    12,318.18/16,999.23 = 7,012.99/x
  3. Step 3: Cross multiply
    12,318.18x = 16,999.23 × 7,012.99
  4. Step 4: Simplify right side
    12,318.18x = 119,215,430.00
  5. Step 5: Solve for x
    x = 119,215,430.00/12,318.18
  6. Step 6: Final answer
    x = 9,678.01

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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.