Home / 28,148.63-38,845.60-15,402.92

Finding the Fourth Proportional to 28,148.63, 38,845.60 and 15,402.92

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Solution

The fourth proportional to 28,148.63, 38,845.60 and 15,402.92 is: 21,256.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.63 : 38,845.60 = 15,402.92 : x
  2. Step 2: Convert to fraction form
    28,148.63/38,845.60 = 15,402.92/x
  3. Step 3: Cross multiply
    28,148.63x = 38,845.60 × 15,402.92
  4. Step 4: Simplify right side
    28,148.63x = 598,335,769.83
  5. Step 5: Solve for x
    x = 598,335,769.83/28,148.63
  6. Step 6: Final answer
    x = 21,256.31

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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.