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Finding the Fourth Proportional to 28,995.88, 40,010.50 and 18,366.76

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Solution

The fourth proportional to 28,995.88, 40,010.50 and 18,366.76 is: 25,343.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995.88 : 40,010.50 = 18,366.76 : x
  2. Step 2: Convert to fraction form
    28,995.88/40,010.50 = 18,366.76/x
  3. Step 3: Cross multiply
    28,995.88x = 40,010.50 × 18,366.76
  4. Step 4: Simplify right side
    28,995.88x = 734,863,250.98
  5. Step 5: Solve for x
    x = 734,863,250.98/28,995.88
  6. Step 6: Final answer
    x = 25,343.71

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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.