Home / 18,690.04-28,040.10-6,212.08

Finding the Fourth Proportional to 18,690.04, 28,040.10 and 6,212.08

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Solution

The fourth proportional to 18,690.04, 28,040.10 and 6,212.08 is: 9,319.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.04 : 28,040.10 = 6,212.08 : x
  2. Step 2: Convert to fraction form
    18,690.04/28,040.10 = 6,212.08/x
  3. Step 3: Cross multiply
    18,690.04x = 28,040.10 × 6,212.08
  4. Step 4: Simplify right side
    18,690.04x = 174,187,173.15
  5. Step 5: Solve for x
    x = 174,187,173.15/18,690.04
  6. Step 6: Final answer
    x = 9,319.79

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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.