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Finding the Fourth Proportional to 28,009, 38,652.54 and 15,433.48

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Solution

The fourth proportional to 28,009, 38,652.54 and 15,433.48 is: 21,298.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009 : 38,652.54 = 15,433.48 : x
  2. Step 2: Convert to fraction form
    28,009/38,652.54 = 15,433.48/x
  3. Step 3: Cross multiply
    28,009x = 38,652.54 × 15,433.48
  4. Step 4: Simplify right side
    28,009x = 596,543,203.04
  5. Step 5: Solve for x
    x = 596,543,203.04/28,009
  6. Step 6: Final answer
    x = 21,298.27

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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.