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Finding the Fourth Proportional to 28,941.30, 39,920.04 and 22,963.50

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Solution

The fourth proportional to 28,941.30, 39,920.04 and 22,963.50 is: 31,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,941.30 : 39,920.04 = 22,963.50 : x
  2. Step 2: Convert to fraction form
    28,941.30/39,920.04 = 22,963.50/x
  3. Step 3: Cross multiply
    28,941.30x = 39,920.04 × 22,963.50
  4. Step 4: Simplify right side
    28,941.30x = 916,703,838.54
  5. Step 5: Solve for x
    x = 916,703,838.54/28,941.30
  6. Step 6: Final answer
    x = 31,674.59

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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.