Home / 13,197.87-19,779.86-5,397.39

Finding the Fourth Proportional to 13,197.87, 19,779.86 and 5,397.39

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Solution

The fourth proportional to 13,197.87, 19,779.86 and 5,397.39 is: 8,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.87 : 19,779.86 = 5,397.39 : x
  2. Step 2: Convert to fraction form
    13,197.87/19,779.86 = 5,397.39/x
  3. Step 3: Cross multiply
    13,197.87x = 19,779.86 × 5,397.39
  4. Step 4: Simplify right side
    13,197.87x = 106,759,591.58
  5. Step 5: Solve for x
    x = 106,759,591.58/13,197.87
  6. Step 6: Final answer
    x = 8,089.15

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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.