Home / 13,783.49-19,021.64-7,815.41

Finding the Fourth Proportional to 13,783.49, 19,021.64 and 7,815.41

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Solution

The fourth proportional to 13,783.49, 19,021.64 and 7,815.41 is: 10,785.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.49 : 19,021.64 = 7,815.41 : x
  2. Step 2: Convert to fraction form
    13,783.49/19,021.64 = 7,815.41/x
  3. Step 3: Cross multiply
    13,783.49x = 19,021.64 × 7,815.41
  4. Step 4: Simplify right side
    13,783.49x = 148,661,781.29
  5. Step 5: Solve for x
    x = 148,661,781.29/13,783.49
  6. Step 6: Final answer
    x = 10,785.50

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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.