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Finding the Fourth Proportional to 15,029.48, 20,740.08 and 8,314.68

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Solution

The fourth proportional to 15,029.48, 20,740.08 and 8,314.68 is: 11,473.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,029.48 : 20,740.08 = 8,314.68 : x
  2. Step 2: Convert to fraction form
    15,029.48/20,740.08 = 8,314.68/x
  3. Step 3: Cross multiply
    15,029.48x = 20,740.08 × 8,314.68
  4. Step 4: Simplify right side
    15,029.48x = 172,447,128.37
  5. Step 5: Solve for x
    x = 172,447,128.37/15,029.48
  6. Step 6: Final answer
    x = 11,473.93

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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.