Home / 28,478.52-39,301.14-15,904.08

Finding the Fourth Proportional to 28,478.52, 39,301.14 and 15,904.08

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Solution

The fourth proportional to 28,478.52, 39,301.14 and 15,904.08 is: 21,948.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.52 : 39,301.14 = 15,904.08 : x
  2. Step 2: Convert to fraction form
    28,478.52/39,301.14 = 15,904.08/x
  3. Step 3: Cross multiply
    28,478.52x = 39,301.14 × 15,904.08
  4. Step 4: Simplify right side
    28,478.52x = 625,048,474.65
  5. Step 5: Solve for x
    x = 625,048,474.65/28,478.52
  6. Step 6: Final answer
    x = 21,948.07

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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.