Home / 14,172.67-19,554.23-9,139.78

Finding the Fourth Proportional to 14,172.67, 19,554.23 and 9,139.78

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Solution

The fourth proportional to 14,172.67, 19,554.23 and 9,139.78 is: 12,610.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,172.67 : 19,554.23 = 9,139.78 : x
  2. Step 2: Convert to fraction form
    14,172.67/19,554.23 = 9,139.78/x
  3. Step 3: Cross multiply
    14,172.67x = 19,554.23 × 9,139.78
  4. Step 4: Simplify right side
    14,172.67x = 178,721,361.68
  5. Step 5: Solve for x
    x = 178,721,361.68/14,172.67
  6. Step 6: Final answer
    x = 12,610.28

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1.5x scale

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.