Home / 13,748.40-18,973.24-7,779.96

Finding the Fourth Proportional to 13,748.40, 18,973.24 and 7,779.96

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Solution

The fourth proportional to 13,748.40, 18,973.24 and 7,779.96 is: 10,736.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.40 : 18,973.24 = 7,779.96 : x
  2. Step 2: Convert to fraction form
    13,748.40/18,973.24 = 7,779.96/x
  3. Step 3: Cross multiply
    13,748.40x = 18,973.24 × 7,779.96
  4. Step 4: Simplify right side
    13,748.40x = 147,611,048.27
  5. Step 5: Solve for x
    x = 147,611,048.27/13,748.40
  6. Step 6: Final answer
    x = 10,736.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.