Home / 30,314.16-45,471.54-18,919.56

Finding the Fourth Proportional to 30,314.16, 45,471.54 and 18,919.56

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Solution

The fourth proportional to 30,314.16, 45,471.54 and 18,919.56 is: 28,379.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,314.16 : 45,471.54 = 18,919.56 : x
  2. Step 2: Convert to fraction form
    30,314.16/45,471.54 = 18,919.56/x
  3. Step 3: Cross multiply
    30,314.16x = 45,471.54 × 18,919.56
  4. Step 4: Simplify right side
    30,314.16x = 860,301,529.32
  5. Step 5: Solve for x
    x = 860,301,529.32/30,314.16
  6. Step 6: Final answer
    x = 28,379.53

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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.