Home / 18,783.13-25,921.52-10,399.63

Finding the Fourth Proportional to 18,783.13, 25,921.52 and 10,399.63

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Solution

The fourth proportional to 18,783.13, 25,921.52 and 10,399.63 is: 14,351.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.13 : 25,921.52 = 10,399.63 : x
  2. Step 2: Convert to fraction form
    18,783.13/25,921.52 = 10,399.63/x
  3. Step 3: Cross multiply
    18,783.13x = 25,921.52 × 10,399.63
  4. Step 4: Simplify right side
    18,783.13x = 269,574,113.43
  5. Step 5: Solve for x
    x = 269,574,113.43/18,783.13
  6. Step 6: Final answer
    x = 14,351.93

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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.