Home / 21,106.31-29,110.47-14,730.86

Finding the Fourth Proportional to 21,106.31, 29,110.47 and 14,730.86

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Solution

The fourth proportional to 21,106.31, 29,110.47 and 14,730.86 is: 20,317.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.31 : 29,110.47 = 14,730.86 : x
  2. Step 2: Convert to fraction form
    21,106.31/29,110.47 = 14,730.86/x
  3. Step 3: Cross multiply
    21,106.31x = 29,110.47 × 14,730.86
  4. Step 4: Simplify right side
    21,106.31x = 428,822,358.50
  5. Step 5: Solve for x
    x = 428,822,358.50/21,106.31
  6. Step 6: Final answer
    x = 20,317.26

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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.