Home / 13,779.90-20,633.40-10,839.60

Finding the Fourth Proportional to 13,779.90, 20,633.40 and 10,839.60

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Solution

The fourth proportional to 13,779.90, 20,633.40 and 10,839.60 is: 16,230.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.90 : 20,633.40 = 10,839.60 : x
  2. Step 2: Convert to fraction form
    13,779.90/20,633.40 = 10,839.60/x
  3. Step 3: Cross multiply
    13,779.90x = 20,633.40 × 10,839.60
  4. Step 4: Simplify right side
    13,779.90x = 223,657,802.64
  5. Step 5: Solve for x
    x = 223,657,802.64/13,779.90
  6. Step 6: Final answer
    x = 16,230.73

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1.5x scale

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.