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Finding the Fourth Proportional to 28,495.34, 42,744.86 and 10,965.17

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Solution

The fourth proportional to 28,495.34, 42,744.86 and 10,965.17 is: 16,448.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.34 : 42,744.86 = 10,965.17 : x
  2. Step 2: Convert to fraction form
    28,495.34/42,744.86 = 10,965.17/x
  3. Step 3: Cross multiply
    28,495.34x = 42,744.86 × 10,965.17
  4. Step 4: Simplify right side
    28,495.34x = 468,704,811.36
  5. Step 5: Solve for x
    x = 468,704,811.36/28,495.34
  6. Step 6: Final answer
    x = 16,448.47

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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.