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Finding the Fourth Proportional to 14,124.80, 21,154.80 and 8,292.80

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Solution

The fourth proportional to 14,124.80, 21,154.80 and 8,292.80 is: 12,420.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.80 : 21,154.80 = 8,292.80 : x
  2. Step 2: Convert to fraction form
    14,124.80/21,154.80 = 8,292.80/x
  3. Step 3: Cross multiply
    14,124.80x = 21,154.80 × 8,292.80
  4. Step 4: Simplify right side
    14,124.80x = 175,432,525.44
  5. Step 5: Solve for x
    x = 175,432,525.44/14,124.80
  6. Step 6: Final answer
    x = 12,420.18

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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.