Home / 13,578.05-18,736.76-7,528.22

Finding the Fourth Proportional to 13,578.05, 18,736.76 and 7,528.22

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Solution

The fourth proportional to 13,578.05, 18,736.76 and 7,528.22 is: 10,388.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.05 : 18,736.76 = 7,528.22 : x
  2. Step 2: Convert to fraction form
    13,578.05/18,736.76 = 7,528.22/x
  3. Step 3: Cross multiply
    13,578.05x = 18,736.76 × 7,528.22
  4. Step 4: Simplify right side
    13,578.05x = 141,054,320.04
  5. Step 5: Solve for x
    x = 141,054,320.04/13,578.05
  6. Step 6: Final answer
    x = 10,388.41

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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.