Home / 14,218.51-19,621.97-7,930.75

Finding the Fourth Proportional to 14,218.51, 19,621.97 and 7,930.75

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Solution

The fourth proportional to 14,218.51, 19,621.97 and 7,930.75 is: 10,944.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.51 : 19,621.97 = 7,930.75 : x
  2. Step 2: Convert to fraction form
    14,218.51/19,621.97 = 7,930.75/x
  3. Step 3: Cross multiply
    14,218.51x = 19,621.97 × 7,930.75
  4. Step 4: Simplify right side
    14,218.51x = 155,616,938.58
  5. Step 5: Solve for x
    x = 155,616,938.58/14,218.51
  6. Step 6: Final answer
    x = 10,944.67

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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.