Home / 28,138.52-38,830.69-15,563.27

Finding the Fourth Proportional to 28,138.52, 38,830.69 and 15,563.27

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Solution

The fourth proportional to 28,138.52, 38,830.69 and 15,563.27 is: 21,477.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.52 : 38,830.69 = 15,563.27 : x
  2. Step 2: Convert to fraction form
    28,138.52/38,830.69 = 15,563.27/x
  3. Step 3: Cross multiply
    28,138.52x = 38,830.69 × 15,563.27
  4. Step 4: Simplify right side
    28,138.52x = 604,332,629.29
  5. Step 5: Solve for x
    x = 604,332,629.29/28,138.52
  6. Step 6: Final answer
    x = 21,477.06

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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.