Home / 13,112.87-18,095.85-7,447.64

Finding the Fourth Proportional to 13,112.87, 18,095.85 and 7,447.64

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Solution

The fourth proportional to 13,112.87, 18,095.85 and 7,447.64 is: 10,277.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.87 : 18,095.85 = 7,447.64 : x
  2. Step 2: Convert to fraction form
    13,112.87/18,095.85 = 7,447.64/x
  3. Step 3: Cross multiply
    13,112.87x = 18,095.85 × 7,447.64
  4. Step 4: Simplify right side
    13,112.87x = 134,771,285.81
  5. Step 5: Solve for x
    x = 134,771,285.81/13,112.87
  6. Step 6: Final answer
    x = 10,277.79

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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.