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Finding the Fourth Proportional to 10,984.80, 16,477.20 and 4,415.70

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Solution

The fourth proportional to 10,984.80, 16,477.20 and 4,415.70 is: 6,623.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,984.80 : 16,477.20 = 4,415.70 : x
  2. Step 2: Convert to fraction form
    10,984.80/16,477.20 = 4,415.70/x
  3. Step 3: Cross multiply
    10,984.80x = 16,477.20 × 4,415.70
  4. Step 4: Simplify right side
    10,984.80x = 72,758,372.04
  5. Step 5: Solve for x
    x = 72,758,372.04/10,984.80
  6. Step 6: Final answer
    x = 6,623.55

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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.