Home / 28,154-38,852.80-15,579.02

Finding the Fourth Proportional to 28,154, 38,852.80 and 15,579.02

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Solution

The fourth proportional to 28,154, 38,852.80 and 15,579.02 is: 21,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,154 : 38,852.80 = 15,579.02 : x
  2. Step 2: Convert to fraction form
    28,154/38,852.80 = 15,579.02/x
  3. Step 3: Cross multiply
    28,154x = 38,852.80 × 15,579.02
  4. Step 4: Simplify right side
    28,154x = 605,288,548.26
  5. Step 5: Solve for x
    x = 605,288,548.26/28,154
  6. Step 6: Final answer
    x = 21,499.20

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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.