Home / 21,664.60-29,880.16-14,113.31

Finding the Fourth Proportional to 21,664.60, 29,880.16 and 14,113.31

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Solution

The fourth proportional to 21,664.60, 29,880.16 and 14,113.31 is: 19,465.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,664.60 : 29,880.16 = 14,113.31 : x
  2. Step 2: Convert to fraction form
    21,664.60/29,880.16 = 14,113.31/x
  3. Step 3: Cross multiply
    21,664.60x = 29,880.16 × 14,113.31
  4. Step 4: Simplify right side
    21,664.60x = 421,707,776.25
  5. Step 5: Solve for x
    x = 421,707,776.25/21,664.60
  6. Step 6: Final answer
    x = 19,465.29

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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.