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Finding the Fourth Proportional to 14,645.31, 20,210.53 and 7,930.94

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Solution

The fourth proportional to 14,645.31, 20,210.53 and 7,930.94 is: 10,944.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,645.31 : 20,210.53 = 7,930.94 : x
  2. Step 2: Convert to fraction form
    14,645.31/20,210.53 = 7,930.94/x
  3. Step 3: Cross multiply
    14,645.31x = 20,210.53 × 7,930.94
  4. Step 4: Simplify right side
    14,645.31x = 160,288,531.50
  5. Step 5: Solve for x
    x = 160,288,531.50/14,645.31
  6. Step 6: Final answer
    x = 10,944.70

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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.