Home / 13,870.94-20,788.34-6,371.80

Finding the Fourth Proportional to 13,870.94, 20,788.34 and 6,371.80

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Solution

The fourth proportional to 13,870.94, 20,788.34 and 6,371.80 is: 9,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.94 : 20,788.34 = 6,371.80 : x
  2. Step 2: Convert to fraction form
    13,870.94/20,788.34 = 6,371.80/x
  3. Step 3: Cross multiply
    13,870.94x = 20,788.34 × 6,371.80
  4. Step 4: Simplify right side
    13,870.94x = 132,459,144.81
  5. Step 5: Solve for x
    x = 132,459,144.81/13,870.94
  6. Step 6: Final answer
    x = 9,549.40

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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.