Home / 18,699.18-28,040.55-7,004.21

Finding the Fourth Proportional to 18,699.18, 28,040.55 and 7,004.21

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Solution

The fourth proportional to 18,699.18, 28,040.55 and 7,004.21 is: 10,503.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.18 : 28,040.55 = 7,004.21 : x
  2. Step 2: Convert to fraction form
    18,699.18/28,040.55 = 7,004.21/x
  3. Step 3: Cross multiply
    18,699.18x = 28,040.55 × 7,004.21
  4. Step 4: Simplify right side
    18,699.18x = 196,401,760.51
  5. Step 5: Solve for x
    x = 196,401,760.51/18,699.18
  6. Step 6: Final answer
    x = 10,503.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.