Home / 13,788.28-20,670.12-5,017.06

Finding the Fourth Proportional to 13,788.28, 20,670.12 and 5,017.06

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Solution

The fourth proportional to 13,788.28, 20,670.12 and 5,017.06 is: 7,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.28 : 20,670.12 = 5,017.06 : x
  2. Step 2: Convert to fraction form
    13,788.28/20,670.12 = 5,017.06/x
  3. Step 3: Cross multiply
    13,788.28x = 20,670.12 × 5,017.06
  4. Step 4: Simplify right side
    13,788.28x = 103,703,232.25
  5. Step 5: Solve for x
    x = 103,703,232.25/13,788.28
  6. Step 6: Final answer
    x = 7,521.11

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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.