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Finding the Fourth Proportional to 28,992.48, 40,009.04 and 16,245.51

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Solution

The fourth proportional to 28,992.48, 40,009.04 and 16,245.51 is: 22,418.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,992.48 : 40,009.04 = 16,245.51 : x
  2. Step 2: Convert to fraction form
    28,992.48/40,009.04 = 16,245.51/x
  3. Step 3: Cross multiply
    28,992.48x = 40,009.04 × 16,245.51
  4. Step 4: Simplify right side
    28,992.48x = 649,966,978.14
  5. Step 5: Solve for x
    x = 649,966,978.14/28,992.48
  6. Step 6: Final answer
    x = 22,418.47

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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.