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Finding the Fourth Proportional to 13,244.87, 18,276.87 and 7,578.32

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Solution

The fourth proportional to 13,244.87, 18,276.87 and 7,578.32 is: 10,457.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,244.87 : 18,276.87 = 7,578.32 : x
  2. Step 2: Convert to fraction form
    13,244.87/18,276.87 = 7,578.32/x
  3. Step 3: Cross multiply
    13,244.87x = 18,276.87 × 7,578.32
  4. Step 4: Simplify right side
    13,244.87x = 138,507,855.40
  5. Step 5: Solve for x
    x = 138,507,855.40/13,244.87
  6. Step 6: Final answer
    x = 10,457.47

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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.