Home / 11,821.65-16,309.30-6,784.05

Finding the Fourth Proportional to 11,821.65, 16,309.30 and 6,784.05

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Solution

The fourth proportional to 11,821.65, 16,309.30 and 6,784.05 is: 9,359.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.65 : 16,309.30 = 6,784.05 : x
  2. Step 2: Convert to fraction form
    11,821.65/16,309.30 = 6,784.05/x
  3. Step 3: Cross multiply
    11,821.65x = 16,309.30 × 6,784.05
  4. Step 4: Simplify right side
    11,821.65x = 110,643,106.67
  5. Step 5: Solve for x
    x = 110,643,106.67/11,821.65
  6. Step 6: Final answer
    x = 9,359.36

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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.