Home / 56,315.20-84,491.58-18,879

Finding the Fourth Proportional to 56,315.20, 84,491.58 and 18,879

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Solution

The fourth proportional to 56,315.20, 84,491.58 and 18,879 is: 28,324.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,315.20 : 84,491.58 = 18,879 : x
  2. Step 2: Convert to fraction form
    56,315.20/84,491.58 = 18,879/x
  3. Step 3: Cross multiply
    56,315.20x = 84,491.58 × 18,879
  4. Step 4: Simplify right side
    56,315.20x = 1,595,116,538.82
  5. Step 5: Solve for x
    x = 1,595,116,538.82/56,315.20
  6. Step 6: Final answer
    x = 28,324.80

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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.