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Finding the Fourth Proportional to 10,992.90, 16,489.35 and 7,056.30

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Solution

The fourth proportional to 10,992.90, 16,489.35 and 7,056.30 is: 10,584.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.90 : 16,489.35 = 7,056.30 : x
  2. Step 2: Convert to fraction form
    10,992.90/16,489.35 = 7,056.30/x
  3. Step 3: Cross multiply
    10,992.90x = 16,489.35 × 7,056.30
  4. Step 4: Simplify right side
    10,992.90x = 116,353,800.41
  5. Step 5: Solve for x
    x = 116,353,800.41/10,992.90
  6. Step 6: Final answer
    x = 10,584.45

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Double scale
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Similar ratio
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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.