Home / 28,554.36-39,405.54-15,979.08

Finding the Fourth Proportional to 28,554.36, 39,405.54 and 15,979.08

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Solution

The fourth proportional to 28,554.36, 39,405.54 and 15,979.08 is: 22,051.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.36 : 39,405.54 = 15,979.08 : x
  2. Step 2: Convert to fraction form
    28,554.36/39,405.54 = 15,979.08/x
  3. Step 3: Cross multiply
    28,554.36x = 39,405.54 × 15,979.08
  4. Step 4: Simplify right side
    28,554.36x = 629,664,276.10
  5. Step 5: Solve for x
    x = 629,664,276.10/28,554.36
  6. Step 6: Final answer
    x = 22,051.42

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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.