Home / 14,292.64-21,435.72-3,905.20

Finding the Fourth Proportional to 14,292.64, 21,435.72 and 3,905.20

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Solution

The fourth proportional to 14,292.64, 21,435.72 and 3,905.20 is: 5,856.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,292.64 : 21,435.72 = 3,905.20 : x
  2. Step 2: Convert to fraction form
    14,292.64/21,435.72 = 3,905.20/x
  3. Step 3: Cross multiply
    14,292.64x = 21,435.72 × 3,905.20
  4. Step 4: Simplify right side
    14,292.64x = 83,710,773.74
  5. Step 5: Solve for x
    x = 83,710,773.74/14,292.64
  6. Step 6: Final answer
    x = 5,856.91

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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.