Home / 28,107.52-38,789.16-15,533.08

Finding the Fourth Proportional to 28,107.52, 38,789.16 and 15,533.08

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Solution

The fourth proportional to 28,107.52, 38,789.16 and 15,533.08 is: 21,436.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.52 : 38,789.16 = 15,533.08 : x
  2. Step 2: Convert to fraction form
    28,107.52/38,789.16 = 15,533.08/x
  3. Step 3: Cross multiply
    28,107.52x = 38,789.16 × 15,533.08
  4. Step 4: Simplify right side
    28,107.52x = 602,515,125.41
  5. Step 5: Solve for x
    x = 602,515,125.41/28,107.52
  6. Step 6: Final answer
    x = 21,436.08

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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.