Home / 18,790.48-28,190.40-5,642.56

Finding the Fourth Proportional to 18,790.48, 28,190.40 and 5,642.56

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Solution

The fourth proportional to 18,790.48, 28,190.40 and 5,642.56 is: 8,465.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.48 : 28,190.40 = 5,642.56 : x
  2. Step 2: Convert to fraction form
    18,790.48/28,190.40 = 5,642.56/x
  3. Step 3: Cross multiply
    18,790.48x = 28,190.40 × 5,642.56
  4. Step 4: Simplify right side
    18,790.48x = 159,066,023.42
  5. Step 5: Solve for x
    x = 159,066,023.42/18,790.48
  6. Step 6: Final answer
    x = 8,465.25

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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.