Home / 28,079.48-38,749.70-15,504.28

Finding the Fourth Proportional to 28,079.48, 38,749.70 and 15,504.28

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Solution

The fourth proportional to 28,079.48, 38,749.70 and 15,504.28 is: 21,395.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.48 : 38,749.70 = 15,504.28 : x
  2. Step 2: Convert to fraction form
    28,079.48/38,749.70 = 15,504.28/x
  3. Step 3: Cross multiply
    28,079.48x = 38,749.70 × 15,504.28
  4. Step 4: Simplify right side
    28,079.48x = 600,786,198.72
  5. Step 5: Solve for x
    x = 600,786,198.72/28,079.48
  6. Step 6: Final answer
    x = 21,395.92

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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.