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Finding the Fourth Proportional to 12,348.58, 18,509.58 and 5,331.89

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Solution

The fourth proportional to 12,348.58, 18,509.58 and 5,331.89 is: 7,992.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,348.58 : 18,509.58 = 5,331.89 : x
  2. Step 2: Convert to fraction form
    12,348.58/18,509.58 = 5,331.89/x
  3. Step 3: Cross multiply
    12,348.58x = 18,509.58 × 5,331.89
  4. Step 4: Simplify right side
    12,348.58x = 98,691,132.64
  5. Step 5: Solve for x
    x = 98,691,132.64/12,348.58
  6. Step 6: Final answer
    x = 7,992.11

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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.