Home / 13,137.44-18,127.48-7,830.32

Finding the Fourth Proportional to 13,137.44, 18,127.48 and 7,830.32

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Solution

The fourth proportional to 13,137.44, 18,127.48 and 7,830.32 is: 10,804.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.44 : 18,127.48 = 7,830.32 : x
  2. Step 2: Convert to fraction form
    13,137.44/18,127.48 = 7,830.32/x
  3. Step 3: Cross multiply
    13,137.44x = 18,127.48 × 7,830.32
  4. Step 4: Simplify right side
    13,137.44x = 141,943,969.19
  5. Step 5: Solve for x
    x = 141,943,969.19/13,137.44
  6. Step 6: Final answer
    x = 10,804.54

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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.