Home / 30,182.80-45,291.84-12,651.28

Finding the Fourth Proportional to 30,182.80, 45,291.84 and 12,651.28

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Solution

The fourth proportional to 30,182.80, 45,291.84 and 12,651.28 is: 18,984.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,182.80 : 45,291.84 = 12,651.28 : x
  2. Step 2: Convert to fraction form
    30,182.80/45,291.84 = 12,651.28/x
  3. Step 3: Cross multiply
    30,182.80x = 45,291.84 × 12,651.28
  4. Step 4: Simplify right side
    30,182.80x = 572,999,749.56
  5. Step 5: Solve for x
    x = 572,999,749.56/30,182.80
  6. Step 6: Final answer
    x = 18,984.31

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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.