Home / 28,149.63-38,845.89-15,402.76

Finding the Fourth Proportional to 28,149.63, 38,845.89 and 15,402.76

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Solution

The fourth proportional to 28,149.63, 38,845.89 and 15,402.76 is: 21,255.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.63 : 38,845.89 = 15,402.76 : x
  2. Step 2: Convert to fraction form
    28,149.63/38,845.89 = 15,402.76/x
  3. Step 3: Cross multiply
    28,149.63x = 38,845.89 × 15,402.76
  4. Step 4: Simplify right side
    28,149.63x = 598,333,969.21
  5. Step 5: Solve for x
    x = 598,333,969.21/28,149.63
  6. Step 6: Final answer
    x = 21,255.48

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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.