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Finding the Fourth Proportional to 28,992.42, 40,004.65 and 16,894.89

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Solution

The fourth proportional to 28,992.42, 40,004.65 and 16,894.89 is: 23,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,992.42 : 40,004.65 = 16,894.89 : x
  2. Step 2: Convert to fraction form
    28,992.42/40,004.65 = 16,894.89/x
  3. Step 3: Cross multiply
    28,992.42x = 40,004.65 × 16,894.89
  4. Step 4: Simplify right side
    28,992.42x = 675,874,161.24
  5. Step 5: Solve for x
    x = 675,874,161.24/28,992.42
  6. Step 6: Final answer
    x = 23,312.10

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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.