Home / 30,339.18-45,491.64-12,559.80

Finding the Fourth Proportional to 30,339.18, 45,491.64 and 12,559.80

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Solution

The fourth proportional to 30,339.18, 45,491.64 and 12,559.80 is: 18,832.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339.18 : 45,491.64 = 12,559.80 : x
  2. Step 2: Convert to fraction form
    30,339.18/45,491.64 = 12,559.80/x
  3. Step 3: Cross multiply
    30,339.18x = 45,491.64 × 12,559.80
  4. Step 4: Simplify right side
    30,339.18x = 571,365,900.07
  5. Step 5: Solve for x
    x = 571,365,900.07/30,339.18
  6. Step 6: Final answer
    x = 18,832.61

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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.