Home / 12,362.63-17,063.21-8,782.78

Finding the Fourth Proportional to 12,362.63, 17,063.21 and 8,782.78

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Solution

The fourth proportional to 12,362.63, 17,063.21 and 8,782.78 is: 12,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,362.63 : 17,063.21 = 8,782.78 : x
  2. Step 2: Convert to fraction form
    12,362.63/17,063.21 = 8,782.78/x
  3. Step 3: Cross multiply
    12,362.63x = 17,063.21 × 8,782.78
  4. Step 4: Simplify right side
    12,362.63x = 149,862,381.41
  5. Step 5: Solve for x
    x = 149,862,381.41/12,362.63
  6. Step 6: Final answer
    x = 12,122.21

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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.