Home / 30,322.90-45,464.79-12,788.02

Finding the Fourth Proportional to 30,322.90, 45,464.79 and 12,788.02

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Solution

The fourth proportional to 30,322.90, 45,464.79 and 12,788.02 is: 19,173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,322.90 : 45,464.79 = 12,788.02 : x
  2. Step 2: Convert to fraction form
    30,322.90/45,464.79 = 12,788.02/x
  3. Step 3: Cross multiply
    30,322.90x = 45,464.79 × 12,788.02
  4. Step 4: Simplify right side
    30,322.90x = 581,404,643.82
  5. Step 5: Solve for x
    x = 581,404,643.82/30,322.90
  6. Step 6: Final answer
    x = 19,173.78

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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.