Home / 28,176.72-38,884.48-15,430.44

Finding the Fourth Proportional to 28,176.72, 38,884.48 and 15,430.44

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Solution

The fourth proportional to 28,176.72, 38,884.48 and 15,430.44 is: 21,294.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.72 : 38,884.48 = 15,430.44 : x
  2. Step 2: Convert to fraction form
    28,176.72/38,884.48 = 15,430.44/x
  3. Step 3: Cross multiply
    28,176.72x = 38,884.48 × 15,430.44
  4. Step 4: Simplify right side
    28,176.72x = 600,004,635.57
  5. Step 5: Solve for x
    x = 600,004,635.57/28,176.72
  6. Step 6: Final answer
    x = 21,294.34

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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.