Home / 30,314.64-45,396-19,187.76

Finding the Fourth Proportional to 30,314.64, 45,396 and 19,187.76

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Solution

The fourth proportional to 30,314.64, 45,396 and 19,187.76 is: 28,733.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,314.64 : 45,396 = 19,187.76 : x
  2. Step 2: Convert to fraction form
    30,314.64/45,396 = 19,187.76/x
  3. Step 3: Cross multiply
    30,314.64x = 45,396 × 19,187.76
  4. Step 4: Simplify right side
    30,314.64x = 871,047,552.96
  5. Step 5: Solve for x
    x = 871,047,552.96/30,314.64
  6. Step 6: Final answer
    x = 28,733.56

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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.