Home / 13,055.64-18,015.48-7,749.60

Finding the Fourth Proportional to 13,055.64, 18,015.48 and 7,749.60

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Solution

The fourth proportional to 13,055.64, 18,015.48 and 7,749.60 is: 10,693.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.64 : 18,015.48 = 7,749.60 : x
  2. Step 2: Convert to fraction form
    13,055.64/18,015.48 = 7,749.60/x
  3. Step 3: Cross multiply
    13,055.64x = 18,015.48 × 7,749.60
  4. Step 4: Simplify right side
    13,055.64x = 139,612,763.81
  5. Step 5: Solve for x
    x = 139,612,763.81/13,055.64
  6. Step 6: Final answer
    x = 10,693.67

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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.