Home / 14,783.45-20,400.30-8,409.11

Finding the Fourth Proportional to 14,783.45, 20,400.30 and 8,409.11

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Solution

The fourth proportional to 14,783.45, 20,400.30 and 8,409.11 is: 11,604.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,783.45 : 20,400.30 = 8,409.11 : x
  2. Step 2: Convert to fraction form
    14,783.45/20,400.30 = 8,409.11/x
  3. Step 3: Cross multiply
    14,783.45x = 20,400.30 × 8,409.11
  4. Step 4: Simplify right side
    14,783.45x = 171,548,264.73
  5. Step 5: Solve for x
    x = 171,548,264.73/14,783.45
  6. Step 6: Final answer
    x = 11,604.08

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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.