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Finding the Fourth Proportional to 28,784, 39,721.92 and 16,846.76

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Solution

The fourth proportional to 28,784, 39,721.92 and 16,846.76 is: 23,248.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,784 : 39,721.92 = 16,846.76 : x
  2. Step 2: Convert to fraction form
    28,784/39,721.92 = 16,846.76/x
  3. Step 3: Cross multiply
    28,784x = 39,721.92 × 16,846.76
  4. Step 4: Simplify right side
    28,784x = 669,185,652.98
  5. Step 5: Solve for x
    x = 669,185,652.98/28,784
  6. Step 6: Final answer
    x = 23,248.53

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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.