Home / 12,219.34-18,330.80-4,426.32

Finding the Fourth Proportional to 12,219.34, 18,330.80 and 4,426.32

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Solution

The fourth proportional to 12,219.34, 18,330.80 and 4,426.32 is: 6,640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.34 : 18,330.80 = 4,426.32 : x
  2. Step 2: Convert to fraction form
    12,219.34/18,330.80 = 4,426.32/x
  3. Step 3: Cross multiply
    12,219.34x = 18,330.80 × 4,426.32
  4. Step 4: Simplify right side
    12,219.34x = 81,137,986.66
  5. Step 5: Solve for x
    x = 81,137,986.66/12,219.34
  6. Step 6: Final answer
    x = 6,640.13

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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.