Home / 13,912.06-20,871.28-4,678.06

Finding the Fourth Proportional to 13,912.06, 20,871.28 and 4,678.06

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Solution

The fourth proportional to 13,912.06, 20,871.28 and 4,678.06 is: 7,018.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.06 : 20,871.28 = 4,678.06 : x
  2. Step 2: Convert to fraction form
    13,912.06/20,871.28 = 4,678.06/x
  3. Step 3: Cross multiply
    13,912.06x = 20,871.28 × 4,678.06
  4. Step 4: Simplify right side
    13,912.06x = 97,637,100.12
  5. Step 5: Solve for x
    x = 97,637,100.12/13,912.06
  6. Step 6: Final answer
    x = 7,018.16

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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.