Home / 28,054.81-38,716.45-15,480.37

Finding the Fourth Proportional to 28,054.81, 38,716.45 and 15,480.37

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Solution

The fourth proportional to 28,054.81, 38,716.45 and 15,480.37 is: 21,363.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.81 : 38,716.45 = 15,480.37 : x
  2. Step 2: Convert to fraction form
    28,054.81/38,716.45 = 15,480.37/x
  3. Step 3: Cross multiply
    28,054.81x = 38,716.45 × 15,480.37
  4. Step 4: Simplify right side
    28,054.81x = 599,344,971.09
  5. Step 5: Solve for x
    x = 599,344,971.09/28,054.81
  6. Step 6: Final answer
    x = 21,363.36

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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.