Home / 13,986.32-20,967.06-5,215.28

Finding the Fourth Proportional to 13,986.32, 20,967.06 and 5,215.28

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Solution

The fourth proportional to 13,986.32, 20,967.06 and 5,215.28 is: 7,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.32 : 20,967.06 = 5,215.28 : x
  2. Step 2: Convert to fraction form
    13,986.32/20,967.06 = 5,215.28/x
  3. Step 3: Cross multiply
    13,986.32x = 20,967.06 × 5,215.28
  4. Step 4: Simplify right side
    13,986.32x = 109,349,088.68
  5. Step 5: Solve for x
    x = 109,349,088.68/13,986.32
  6. Step 6: Final answer
    x = 7,818.29

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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.