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Finding the Fourth Proportional to 28,852.92, 43,275.04 and 9,128.91

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Solution

The fourth proportional to 28,852.92, 43,275.04 and 9,128.91 is: 13,691.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,852.92 : 43,275.04 = 9,128.91 : x
  2. Step 2: Convert to fraction form
    28,852.92/43,275.04 = 9,128.91/x
  3. Step 3: Cross multiply
    28,852.92x = 43,275.04 × 9,128.91
  4. Step 4: Simplify right side
    28,852.92x = 395,053,945.41
  5. Step 5: Solve for x
    x = 395,053,945.41/28,852.92
  6. Step 6: Final answer
    x = 13,691.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.