Home / 12,858.70-19,295.31-5,072.98

Finding the Fourth Proportional to 12,858.70, 19,295.31 and 5,072.98

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Solution

The fourth proportional to 12,858.70, 19,295.31 and 5,072.98 is: 7,612.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.70 : 19,295.31 = 5,072.98 : x
  2. Step 2: Convert to fraction form
    12,858.70/19,295.31 = 5,072.98/x
  3. Step 3: Cross multiply
    12,858.70x = 19,295.31 × 5,072.98
  4. Step 4: Simplify right side
    12,858.70x = 97,884,721.72
  5. Step 5: Solve for x
    x = 97,884,721.72/12,858.70
  6. Step 6: Final answer
    x = 7,612.33

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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.