Home / 14,780.80-22,171.20-4,920.40

Finding the Fourth Proportional to 14,780.80, 22,171.20 and 4,920.40

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Solution

The fourth proportional to 14,780.80, 22,171.20 and 4,920.40 is: 7,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.80 : 22,171.20 = 4,920.40 : x
  2. Step 2: Convert to fraction form
    14,780.80/22,171.20 = 4,920.40/x
  3. Step 3: Cross multiply
    14,780.80x = 22,171.20 × 4,920.40
  4. Step 4: Simplify right side
    14,780.80x = 109,091,172.48
  5. Step 5: Solve for x
    x = 109,091,172.48/14,780.80
  6. Step 6: Final answer
    x = 7,380.60

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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.