Home / 13,884.45-19,155.79-7,911.81

Finding the Fourth Proportional to 13,884.45, 19,155.79 and 7,911.81

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Solution

The fourth proportional to 13,884.45, 19,155.79 and 7,911.81 is: 10,915.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,884.45 : 19,155.79 = 7,911.81 : x
  2. Step 2: Convert to fraction form
    13,884.45/19,155.79 = 7,911.81/x
  3. Step 3: Cross multiply
    13,884.45x = 19,155.79 × 7,911.81
  4. Step 4: Simplify right side
    13,884.45x = 151,556,980.77
  5. Step 5: Solve for x
    x = 151,556,980.77/13,884.45
  6. Step 6: Final answer
    x = 10,915.59

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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.