Home / 11,715.03-16,161.93-8,565.75

Finding the Fourth Proportional to 11,715.03, 16,161.93 and 8,565.75

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Solution

The fourth proportional to 11,715.03, 16,161.93 and 8,565.75 is: 11,817.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.03 : 16,161.93 = 8,565.75 : x
  2. Step 2: Convert to fraction form
    11,715.03/16,161.93 = 8,565.75/x
  3. Step 3: Cross multiply
    11,715.03x = 16,161.93 × 8,565.75
  4. Step 4: Simplify right side
    11,715.03x = 138,439,051.90
  5. Step 5: Solve for x
    x = 138,439,051.90/11,715.03
  6. Step 6: Final answer
    x = 11,817.22

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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.