Home / 13,055.45-18,009.95-7,748.33

Finding the Fourth Proportional to 13,055.45, 18,009.95 and 7,748.33

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Solution

The fourth proportional to 13,055.45, 18,009.95 and 7,748.33 is: 10,688.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.45 : 18,009.95 = 7,748.33 : x
  2. Step 2: Convert to fraction form
    13,055.45/18,009.95 = 7,748.33/x
  3. Step 3: Cross multiply
    13,055.45x = 18,009.95 × 7,748.33
  4. Step 4: Simplify right side
    13,055.45x = 139,546,907.09
  5. Step 5: Solve for x
    x = 139,546,907.09/13,055.45
  6. Step 6: Final answer
    x = 10,688.79

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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.