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Finding the Fourth Proportional to 28,993.78, 43,507.05 and 12,352.06

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Solution

The fourth proportional to 28,993.78, 43,507.05 and 12,352.06 is: 18,535.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.78 : 43,507.05 = 12,352.06 : x
  2. Step 2: Convert to fraction form
    28,993.78/43,507.05 = 12,352.06/x
  3. Step 3: Cross multiply
    28,993.78x = 43,507.05 × 12,352.06
  4. Step 4: Simplify right side
    28,993.78x = 537,401,692.02
  5. Step 5: Solve for x
    x = 537,401,692.02/28,993.78
  6. Step 6: Final answer
    x = 18,535.07

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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.