Home / 11,909.09-16,430.76-6,872.64

Finding the Fourth Proportional to 11,909.09, 16,430.76 and 6,872.64

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Solution

The fourth proportional to 11,909.09, 16,430.76 and 6,872.64 is: 9,482.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.09 : 16,430.76 = 6,872.64 : x
  2. Step 2: Convert to fraction form
    11,909.09/16,430.76 = 6,872.64/x
  3. Step 3: Cross multiply
    11,909.09x = 16,430.76 × 6,872.64
  4. Step 4: Simplify right side
    11,909.09x = 112,922,664.04
  5. Step 5: Solve for x
    x = 112,922,664.04/11,909.09
  6. Step 6: Final answer
    x = 9,482.06

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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.