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Finding the Fourth Proportional to 28,634.27, 42,950.77 and 9,913.18

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Solution

The fourth proportional to 28,634.27, 42,950.77 and 9,913.18 is: 14,869.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,634.27 : 42,950.77 = 9,913.18 : x
  2. Step 2: Convert to fraction form
    28,634.27/42,950.77 = 9,913.18/x
  3. Step 3: Cross multiply
    28,634.27x = 42,950.77 × 9,913.18
  4. Step 4: Simplify right side
    28,634.27x = 425,778,581.99
  5. Step 5: Solve for x
    x = 425,778,581.99/28,634.27
  6. Step 6: Final answer
    x = 14,869.54

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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.