Home / 12,622.68-18,913.10-7,677.36

Finding the Fourth Proportional to 12,622.68, 18,913.10 and 7,677.36

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Solution

The fourth proportional to 12,622.68, 18,913.10 and 7,677.36 is: 11,503.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.68 : 18,913.10 = 7,677.36 : x
  2. Step 2: Convert to fraction form
    12,622.68/18,913.10 = 7,677.36/x
  3. Step 3: Cross multiply
    12,622.68x = 18,913.10 × 7,677.36
  4. Step 4: Simplify right side
    12,622.68x = 145,202,639.03
  5. Step 5: Solve for x
    x = 145,202,639.03/12,622.68
  6. Step 6: Final answer
    x = 11,503.31

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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.