Home / 28,053.81-38,715.07-15,479.37

Finding the Fourth Proportional to 28,053.81, 38,715.07 and 15,479.37

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Solution

The fourth proportional to 28,053.81, 38,715.07 and 15,479.37 is: 21,361.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.81 : 38,715.07 = 15,479.37 : x
  2. Step 2: Convert to fraction form
    28,053.81/38,715.07 = 15,479.37/x
  3. Step 3: Cross multiply
    28,053.81x = 38,715.07 × 15,479.37
  4. Step 4: Simplify right side
    28,053.81x = 599,285,028.59
  5. Step 5: Solve for x
    x = 599,285,028.59/28,053.81
  6. Step 6: Final answer
    x = 21,361.98

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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.