Home / 13,290.66-19,918.80-6,172.29

Finding the Fourth Proportional to 13,290.66, 19,918.80 and 6,172.29

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Solution

The fourth proportional to 13,290.66, 19,918.80 and 6,172.29 is: 9,250.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.66 : 19,918.80 = 6,172.29 : x
  2. Step 2: Convert to fraction form
    13,290.66/19,918.80 = 6,172.29/x
  3. Step 3: Cross multiply
    13,290.66x = 19,918.80 × 6,172.29
  4. Step 4: Simplify right side
    13,290.66x = 122,944,610.05
  5. Step 5: Solve for x
    x = 122,944,610.05/13,290.66
  6. Step 6: Final answer
    x = 9,250.45

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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.