Home / 13,772.82-19,006.40-7,485.20

Finding the Fourth Proportional to 13,772.82, 19,006.40 and 7,485.20

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Solution

The fourth proportional to 13,772.82, 19,006.40 and 7,485.20 is: 10,329.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.82 : 19,006.40 = 7,485.20 : x
  2. Step 2: Convert to fraction form
    13,772.82/19,006.40 = 7,485.20/x
  3. Step 3: Cross multiply
    13,772.82x = 19,006.40 × 7,485.20
  4. Step 4: Simplify right side
    13,772.82x = 142,266,628.96
  5. Step 5: Solve for x
    x = 142,266,628.96/13,772.82
  6. Step 6: Final answer
    x = 10,329.52

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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.