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Finding the Fourth Proportional to 28,593.70, 42,907.40 and 11,952.45

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Solution

The fourth proportional to 28,593.70, 42,907.40 and 11,952.45 is: 17,935.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593.70 : 42,907.40 = 11,952.45 : x
  2. Step 2: Convert to fraction form
    28,593.70/42,907.40 = 11,952.45/x
  3. Step 3: Cross multiply
    28,593.70x = 42,907.40 × 11,952.45
  4. Step 4: Simplify right side
    28,593.70x = 512,848,553.13
  5. Step 5: Solve for x
    x = 512,848,553.13/28,593.70
  6. Step 6: Final answer
    x = 17,935.72

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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.