Home / 28,106.60-42,167.34-9,389.96

Finding the Fourth Proportional to 28,106.60, 42,167.34 and 9,389.96

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Solution

The fourth proportional to 28,106.60, 42,167.34 and 9,389.96 is: 14,087.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.60 : 42,167.34 = 9,389.96 : x
  2. Step 2: Convert to fraction form
    28,106.60/42,167.34 = 9,389.96/x
  3. Step 3: Cross multiply
    28,106.60x = 42,167.34 × 9,389.96
  4. Step 4: Simplify right side
    28,106.60x = 395,949,635.91
  5. Step 5: Solve for x
    x = 395,949,635.91/28,106.60
  6. Step 6: Final answer
    x = 14,087.43

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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.