Home / 14,861.90-20,510.26-8,815.73

Finding the Fourth Proportional to 14,861.90, 20,510.26 and 8,815.73

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Solution

The fourth proportional to 14,861.90, 20,510.26 and 8,815.73 is: 12,166.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,861.90 : 20,510.26 = 8,815.73 : x
  2. Step 2: Convert to fraction form
    14,861.90/20,510.26 = 8,815.73/x
  3. Step 3: Cross multiply
    14,861.90x = 20,510.26 × 8,815.73
  4. Step 4: Simplify right side
    14,861.90x = 180,812,947.45
  5. Step 5: Solve for x
    x = 180,812,947.45/14,861.90
  6. Step 6: Final answer
    x = 12,166.20

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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.