Home / 18,783.86-25,921.71-10,400.36

Finding the Fourth Proportional to 18,783.86, 25,921.71 and 10,400.36

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Solution

The fourth proportional to 18,783.86, 25,921.71 and 10,400.36 is: 14,352.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.86 : 25,921.71 = 10,400.36 : x
  2. Step 2: Convert to fraction form
    18,783.86/25,921.71 = 10,400.36/x
  3. Step 3: Cross multiply
    18,783.86x = 25,921.71 × 10,400.36
  4. Step 4: Simplify right side
    18,783.86x = 269,594,986.21
  5. Step 5: Solve for x
    x = 269,594,986.21/18,783.86
  6. Step 6: Final answer
    x = 14,352.48

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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.