Home / 14,318.40-21,475.08-3,929.28

Finding the Fourth Proportional to 14,318.40, 21,475.08 and 3,929.28

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Solution

The fourth proportional to 14,318.40, 21,475.08 and 3,929.28 is: 5,893.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,318.40 : 21,475.08 = 3,929.28 : x
  2. Step 2: Convert to fraction form
    14,318.40/21,475.08 = 3,929.28/x
  3. Step 3: Cross multiply
    14,318.40x = 21,475.08 × 3,929.28
  4. Step 4: Simplify right side
    14,318.40x = 84,381,602.34
  5. Step 5: Solve for x
    x = 84,381,602.34/14,318.40
  6. Step 6: Final answer
    x = 5,893.23

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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.