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Finding the Fourth Proportional to 28,898.10, 39,870.02 and 16,964.37

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Solution

The fourth proportional to 28,898.10, 39,870.02 and 16,964.37 is: 23,405.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.10 : 39,870.02 = 16,964.37 : x
  2. Step 2: Convert to fraction form
    28,898.10/39,870.02 = 16,964.37/x
  3. Step 3: Cross multiply
    28,898.10x = 39,870.02 × 16,964.37
  4. Step 4: Simplify right side
    28,898.10x = 676,369,813.60
  5. Step 5: Solve for x
    x = 676,369,813.60/28,898.10
  6. Step 6: Final answer
    x = 23,405.34

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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.