Home / 14,512.80-21,769.20-8,666.40

Finding the Fourth Proportional to 14,512.80, 21,769.20 and 8,666.40

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Solution

The fourth proportional to 14,512.80, 21,769.20 and 8,666.40 is: 12,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,512.80 : 21,769.20 = 8,666.40 : x
  2. Step 2: Convert to fraction form
    14,512.80/21,769.20 = 8,666.40/x
  3. Step 3: Cross multiply
    14,512.80x = 21,769.20 × 8,666.40
  4. Step 4: Simplify right side
    14,512.80x = 188,660,594.88
  5. Step 5: Solve for x
    x = 188,660,594.88/14,512.80
  6. Step 6: Final answer
    x = 12,999.60

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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.