Home / 13,858.90-20,788.65-6,461.37

Finding the Fourth Proportional to 13,858.90, 20,788.65 and 6,461.37

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Solution

The fourth proportional to 13,858.90, 20,788.65 and 6,461.37 is: 9,692.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.90 : 20,788.65 = 6,461.37 : x
  2. Step 2: Convert to fraction form
    13,858.90/20,788.65 = 6,461.37/x
  3. Step 3: Cross multiply
    13,858.90x = 20,788.65 × 6,461.37
  4. Step 4: Simplify right side
    13,858.90x = 134,323,159.45
  5. Step 5: Solve for x
    x = 134,323,159.45/13,858.90
  6. Step 6: Final answer
    x = 9,692.20

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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.