Home / 13,368.37-18,448.08-7,702.78

Finding the Fourth Proportional to 13,368.37, 18,448.08 and 7,702.78

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Solution

The fourth proportional to 13,368.37, 18,448.08 and 7,702.78 is: 10,629.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.37 : 18,448.08 = 7,702.78 : x
  2. Step 2: Convert to fraction form
    13,368.37/18,448.08 = 7,702.78/x
  3. Step 3: Cross multiply
    13,368.37x = 18,448.08 × 7,702.78
  4. Step 4: Simplify right side
    13,368.37x = 142,101,455.54
  5. Step 5: Solve for x
    x = 142,101,455.54/13,368.37
  6. Step 6: Final answer
    x = 10,629.68

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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.