Home / 9,985.95-13,775.40-8,099.73

Finding the Fourth Proportional to 9,985.95, 13,775.40 and 8,099.73

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Solution

The fourth proportional to 9,985.95, 13,775.40 and 8,099.73 is: 11,173.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.95 : 13,775.40 = 8,099.73 : x
  2. Step 2: Convert to fraction form
    9,985.95/13,775.40 = 8,099.73/x
  3. Step 3: Cross multiply
    9,985.95x = 13,775.40 × 8,099.73
  4. Step 4: Simplify right side
    9,985.95x = 111,577,020.64
  5. Step 5: Solve for x
    x = 111,577,020.64/9,985.95
  6. Step 6: Final answer
    x = 11,173.40

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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.