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Finding the Fourth Proportional to 15,051.47, 20,769.35 and 8,335.41

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Solution

The fourth proportional to 15,051.47, 20,769.35 and 8,335.41 is: 11,501.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051.47 : 20,769.35 = 8,335.41 : x
  2. Step 2: Convert to fraction form
    15,051.47/20,769.35 = 8,335.41/x
  3. Step 3: Cross multiply
    15,051.47x = 20,769.35 × 8,335.41
  4. Step 4: Simplify right side
    15,051.47x = 173,120,928.12
  5. Step 5: Solve for x
    x = 173,120,928.12/15,051.47
  6. Step 6: Final answer
    x = 11,501.93

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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.