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Finding the Fourth Proportional to 28,993.63, 43,507.17 and 15,666.66

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Solution

The fourth proportional to 28,993.63, 43,507.17 and 15,666.66 is: 23,509.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.63 : 43,507.17 = 15,666.66 : x
  2. Step 2: Convert to fraction form
    28,993.63/43,507.17 = 15,666.66/x
  3. Step 3: Cross multiply
    28,993.63x = 43,507.17 × 15,666.66
  4. Step 4: Simplify right side
    28,993.63x = 681,612,039.95
  5. Step 5: Solve for x
    x = 681,612,039.95/28,993.63
  6. Step 6: Final answer
    x = 23,509.03

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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.