Home / 18,685.86-28,040.67-7,000.26

Finding the Fourth Proportional to 18,685.86, 28,040.67 and 7,000.26

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Solution

The fourth proportional to 18,685.86, 28,040.67 and 7,000.26 is: 10,504.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.86 : 28,040.67 = 7,000.26 : x
  2. Step 2: Convert to fraction form
    18,685.86/28,040.67 = 7,000.26/x
  3. Step 3: Cross multiply
    18,685.86x = 28,040.67 × 7,000.26
  4. Step 4: Simplify right side
    18,685.86x = 196,291,980.57
  5. Step 5: Solve for x
    x = 196,291,980.57/18,685.86
  6. Step 6: Final answer
    x = 10,504.84

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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.