Home / 13,788.54-20,681.70-4,426.05

Finding the Fourth Proportional to 13,788.54, 20,681.70 and 4,426.05

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Solution

The fourth proportional to 13,788.54, 20,681.70 and 4,426.05 is: 6,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.54 : 20,681.70 = 4,426.05 : x
  2. Step 2: Convert to fraction form
    13,788.54/20,681.70 = 4,426.05/x
  3. Step 3: Cross multiply
    13,788.54x = 20,681.70 × 4,426.05
  4. Step 4: Simplify right side
    13,788.54x = 91,538,238.29
  5. Step 5: Solve for x
    x = 91,538,238.29/13,788.54
  6. Step 6: Final answer
    x = 6,638.72

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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.