Home / 28,456.52-39,268.40-15,882.08

Finding the Fourth Proportional to 28,456.52, 39,268.40 and 15,882.08

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Solution

The fourth proportional to 28,456.52, 39,268.40 and 15,882.08 is: 21,916.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.52 : 39,268.40 = 15,882.08 : x
  2. Step 2: Convert to fraction form
    28,456.52/39,268.40 = 15,882.08/x
  3. Step 3: Cross multiply
    28,456.52x = 39,268.40 × 15,882.08
  4. Step 4: Simplify right side
    28,456.52x = 623,663,870.27
  5. Step 5: Solve for x
    x = 623,663,870.27/28,456.52
  6. Step 6: Final answer
    x = 21,916.38

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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.