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Finding the Fourth Proportional to 15,714.36, 21,572.04 and 15,566.64

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Solution

The fourth proportional to 15,714.36, 21,572.04 and 15,566.64 is: 21,369.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,714.36 : 21,572.04 = 15,566.64 : x
  2. Step 2: Convert to fraction form
    15,714.36/21,572.04 = 15,566.64/x
  3. Step 3: Cross multiply
    15,714.36x = 21,572.04 × 15,566.64
  4. Step 4: Simplify right side
    15,714.36x = 335,804,180.75
  5. Step 5: Solve for x
    x = 335,804,180.75/15,714.36
  6. Step 6: Final answer
    x = 21,369.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.