Home / 13,821.10-19,072.40-7,851.94

Finding the Fourth Proportional to 13,821.10, 19,072.40 and 7,851.94

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Solution

The fourth proportional to 13,821.10, 19,072.40 and 7,851.94 is: 10,835.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.10 : 19,072.40 = 7,851.94 : x
  2. Step 2: Convert to fraction form
    13,821.10/19,072.40 = 7,851.94/x
  3. Step 3: Cross multiply
    13,821.10x = 19,072.40 × 7,851.94
  4. Step 4: Simplify right side
    13,821.10x = 149,755,253.52
  5. Step 5: Solve for x
    x = 149,755,253.52/13,821.10
  6. Step 6: Final answer
    x = 10,835.26

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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.