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Finding the Fourth Proportional to 11,129.20, 16,693.80 and 11,052.40

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Solution

The fourth proportional to 11,129.20, 16,693.80 and 11,052.40 is: 16,578.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.20 : 16,693.80 = 11,052.40 : x
  2. Step 2: Convert to fraction form
    11,129.20/16,693.80 = 11,052.40/x
  3. Step 3: Cross multiply
    11,129.20x = 16,693.80 × 11,052.40
  4. Step 4: Simplify right side
    11,129.20x = 184,506,555.12
  5. Step 5: Solve for x
    x = 184,506,555.12/11,129.20
  6. Step 6: Final answer
    x = 16,578.60

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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.