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Finding the Fourth Proportional to 28,300.30, 39,042.30 and 17,671.48

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Solution

The fourth proportional to 28,300.30, 39,042.30 and 17,671.48 is: 24,379.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,300.30 : 39,042.30 = 17,671.48 : x
  2. Step 2: Convert to fraction form
    28,300.30/39,042.30 = 17,671.48/x
  3. Step 3: Cross multiply
    28,300.30x = 39,042.30 × 17,671.48
  4. Step 4: Simplify right side
    28,300.30x = 689,935,223.60
  5. Step 5: Solve for x
    x = 689,935,223.60/28,300.30
  6. Step 6: Final answer
    x = 24,379.08

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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.