Home / 14,579.21-20,120.77-8,916.50

Finding the Fourth Proportional to 14,579.21, 20,120.77 and 8,916.50

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Solution

The fourth proportional to 14,579.21, 20,120.77 and 8,916.50 is: 12,305.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,579.21 : 20,120.77 = 8,916.50 : x
  2. Step 2: Convert to fraction form
    14,579.21/20,120.77 = 8,916.50/x
  3. Step 3: Cross multiply
    14,579.21x = 20,120.77 × 8,916.50
  4. Step 4: Simplify right side
    14,579.21x = 179,406,907.15
  5. Step 5: Solve for x
    x = 179,406,907.15/14,579.21
  6. Step 6: Final answer
    x = 12,305.67

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1.5x scale

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.