Home / 12,779.39-19,168.63-6,203.81

Finding the Fourth Proportional to 12,779.39, 19,168.63 and 6,203.81

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Solution

The fourth proportional to 12,779.39, 19,168.63 and 6,203.81 is: 9,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.39 : 19,168.63 = 6,203.81 : x
  2. Step 2: Convert to fraction form
    12,779.39/19,168.63 = 6,203.81/x
  3. Step 3: Cross multiply
    12,779.39x = 19,168.63 × 6,203.81
  4. Step 4: Simplify right side
    12,779.39x = 118,918,570.89
  5. Step 5: Solve for x
    x = 118,918,570.89/12,779.39
  6. Step 6: Final answer
    x = 9,305.49

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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.