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Finding the Fourth Proportional to 28,632, 39,529.44 and 18,713.28

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Solution

The fourth proportional to 28,632, 39,529.44 and 18,713.28 is: 25,835.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,632 : 39,529.44 = 18,713.28 : x
  2. Step 2: Convert to fraction form
    28,632/39,529.44 = 18,713.28/x
  3. Step 3: Cross multiply
    28,632x = 39,529.44 × 18,713.28
  4. Step 4: Simplify right side
    28,632x = 739,725,478.96
  5. Step 5: Solve for x
    x = 739,725,478.96/28,632
  6. Step 6: Final answer
    x = 25,835.62

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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.