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Finding the Fourth Proportional to 26,928, 37,160.64 and 15,152

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Solution

The fourth proportional to 26,928, 37,160.64 and 15,152 is: 20,909.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,928 : 37,160.64 = 15,152 : x
  2. Step 2: Convert to fraction form
    26,928/37,160.64 = 15,152/x
  3. Step 3: Cross multiply
    26,928x = 37,160.64 × 15,152
  4. Step 4: Simplify right side
    26,928x = 563,058,017.28
  5. Step 5: Solve for x
    x = 563,058,017.28/26,928
  6. Step 6: Final answer
    x = 20,909.76

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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.