Home / 14,258.92-21,385.50-3,870.76

Finding the Fourth Proportional to 14,258.92, 21,385.50 and 3,870.76

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Solution

The fourth proportional to 14,258.92, 21,385.50 and 3,870.76 is: 5,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,258.92 : 21,385.50 = 3,870.76 : x
  2. Step 2: Convert to fraction form
    14,258.92/21,385.50 = 3,870.76/x
  3. Step 3: Cross multiply
    14,258.92x = 21,385.50 × 3,870.76
  4. Step 4: Simplify right side
    14,258.92x = 82,778,137.98
  5. Step 5: Solve for x
    x = 82,778,137.98/14,258.92
  6. Step 6: Final answer
    x = 5,805.36

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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.