Home / 9,896.12-13,656.62-5,420.06

Finding the Fourth Proportional to 9,896.12, 13,656.62 and 5,420.06

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Solution

The fourth proportional to 9,896.12, 13,656.62 and 5,420.06 is: 7,479.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,896.12 : 13,656.62 = 5,420.06 : x
  2. Step 2: Convert to fraction form
    9,896.12/13,656.62 = 5,420.06/x
  3. Step 3: Cross multiply
    9,896.12x = 13,656.62 × 5,420.06
  4. Step 4: Simplify right side
    9,896.12x = 74,019,645.06
  5. Step 5: Solve for x
    x = 74,019,645.06/9,896.12
  6. Step 6: Final answer
    x = 7,479.67

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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.