Home / 11,820.15-16,307.24-6,782.55

Finding the Fourth Proportional to 11,820.15, 16,307.24 and 6,782.55

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Solution

The fourth proportional to 11,820.15, 16,307.24 and 6,782.55 is: 9,357.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.15 : 16,307.24 = 6,782.55 : x
  2. Step 2: Convert to fraction form
    11,820.15/16,307.24 = 6,782.55/x
  3. Step 3: Cross multiply
    11,820.15x = 16,307.24 × 6,782.55
  4. Step 4: Simplify right side
    11,820.15x = 110,604,636.75
  5. Step 5: Solve for x
    x = 110,604,636.75/11,820.15
  6. Step 6: Final answer
    x = 9,357.30

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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.