Home / 14,746.88-20,353.32-8,782

Finding the Fourth Proportional to 14,746.88, 20,353.32 and 8,782

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Solution

The fourth proportional to 14,746.88, 20,353.32 and 8,782 is: 12,120.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,746.88 : 20,353.32 = 8,782 : x
  2. Step 2: Convert to fraction form
    14,746.88/20,353.32 = 8,782/x
  3. Step 3: Cross multiply
    14,746.88x = 20,353.32 × 8,782
  4. Step 4: Simplify right side
    14,746.88x = 178,742,856.24
  5. Step 5: Solve for x
    x = 178,742,856.24/14,746.88
  6. Step 6: Final answer
    x = 12,120.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.