Home / 11,826.80-16,323.08-7,111.40

Finding the Fourth Proportional to 11,826.80, 16,323.08 and 7,111.40

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Solution

The fourth proportional to 11,826.80, 16,323.08 and 7,111.40 is: 9,814.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,826.80 : 16,323.08 = 7,111.40 : x
  2. Step 2: Convert to fraction form
    11,826.80/16,323.08 = 7,111.40/x
  3. Step 3: Cross multiply
    11,826.80x = 16,323.08 × 7,111.40
  4. Step 4: Simplify right side
    11,826.80x = 116,079,951.11
  5. Step 5: Solve for x
    x = 116,079,951.11/11,826.80
  6. Step 6: Final answer
    x = 9,814.99

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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.