Home / 13,981.07-20,975.25-5,216.06

Finding the Fourth Proportional to 13,981.07, 20,975.25 and 5,216.06

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Solution

The fourth proportional to 13,981.07, 20,975.25 and 5,216.06 is: 7,825.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.07 : 20,975.25 = 5,216.06 : x
  2. Step 2: Convert to fraction form
    13,981.07/20,975.25 = 5,216.06/x
  3. Step 3: Cross multiply
    13,981.07x = 20,975.25 × 5,216.06
  4. Step 4: Simplify right side
    13,981.07x = 109,408,234.51
  5. Step 5: Solve for x
    x = 109,408,234.51/13,981.07
  6. Step 6: Final answer
    x = 7,825.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.