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Finding the Fourth Proportional to 11,495.58, 15,847.83 and 9,720.06

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Solution

The fourth proportional to 11,495.58, 15,847.83 and 9,720.06 is: 13,400.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,495.58 : 15,847.83 = 9,720.06 : x
  2. Step 2: Convert to fraction form
    11,495.58/15,847.83 = 9,720.06/x
  3. Step 3: Cross multiply
    11,495.58x = 15,847.83 × 9,720.06
  4. Step 4: Simplify right side
    11,495.58x = 154,041,858.47
  5. Step 5: Solve for x
    x = 154,041,858.47/11,495.58
  6. Step 6: Final answer
    x = 13,400.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.