Home / 18,820.13-28,235.05-5,492.79

Finding the Fourth Proportional to 18,820.13, 28,235.05 and 5,492.79

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Solution

The fourth proportional to 18,820.13, 28,235.05 and 5,492.79 is: 8,240.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.13 : 28,235.05 = 5,492.79 : x
  2. Step 2: Convert to fraction form
    18,820.13/28,235.05 = 5,492.79/x
  3. Step 3: Cross multiply
    18,820.13x = 28,235.05 × 5,492.79
  4. Step 4: Simplify right side
    18,820.13x = 155,089,186.56
  5. Step 5: Solve for x
    x = 155,089,186.56/18,820.13
  6. Step 6: Final answer
    x = 8,240.60

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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.