Home / 12,622.20-18,916.58-9,686.15

Finding the Fourth Proportional to 12,622.20, 18,916.58 and 9,686.15

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Solution

The fourth proportional to 12,622.20, 18,916.58 and 9,686.15 is: 14,516.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.20 : 18,916.58 = 9,686.15 : x
  2. Step 2: Convert to fraction form
    12,622.20/18,916.58 = 9,686.15/x
  3. Step 3: Cross multiply
    12,622.20x = 18,916.58 × 9,686.15
  4. Step 4: Simplify right side
    12,622.20x = 183,228,688.35
  5. Step 5: Solve for x
    x = 183,228,688.35/12,622.20
  6. Step 6: Final answer
    x = 14,516.38

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1.5x scale

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.