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Finding the Fourth Proportional to 28,937.73, 39,956.73 and 22,212.72

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Solution

The fourth proportional to 28,937.73, 39,956.73 and 22,212.72 is: 30,670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,937.73 : 39,956.73 = 22,212.72 : x
  2. Step 2: Convert to fraction form
    28,937.73/39,956.73 = 22,212.72/x
  3. Step 3: Cross multiply
    28,937.73x = 39,956.73 × 22,212.72
  4. Step 4: Simplify right side
    28,937.73x = 887,547,655.61
  5. Step 5: Solve for x
    x = 887,547,655.61/28,937.73
  6. Step 6: Final answer
    x = 30,670.95

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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.