Home / 13,216.48-18,238.07-7,473.78

Finding the Fourth Proportional to 13,216.48, 18,238.07 and 7,473.78

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Solution

The fourth proportional to 13,216.48, 18,238.07 and 7,473.78 is: 10,313.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.48 : 18,238.07 = 7,473.78 : x
  2. Step 2: Convert to fraction form
    13,216.48/18,238.07 = 7,473.78/x
  3. Step 3: Cross multiply
    13,216.48x = 18,238.07 × 7,473.78
  4. Step 4: Simplify right side
    13,216.48x = 136,307,341.49
  5. Step 5: Solve for x
    x = 136,307,341.49/13,216.48
  6. Step 6: Final answer
    x = 10,313.44

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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.