Home / 14,068.80-21,064.32-7,109.28

Finding the Fourth Proportional to 14,068.80, 21,064.32 and 7,109.28

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Solution

The fourth proportional to 14,068.80, 21,064.32 and 7,109.28 is: 10,644.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,068.80 : 21,064.32 = 7,109.28 : x
  2. Step 2: Convert to fraction form
    14,068.80/21,064.32 = 7,109.28/x
  3. Step 3: Cross multiply
    14,068.80x = 21,064.32 × 7,109.28
  4. Step 4: Simplify right side
    14,068.80x = 149,752,148.89
  5. Step 5: Solve for x
    x = 149,752,148.89/14,068.80
  6. Step 6: Final answer
    x = 10,644.27

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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.