Home / 38,705.26-53,415.37-21,714.88

Finding the Fourth Proportional to 38,705.26, 53,415.37 and 21,714.88

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Solution

The fourth proportional to 38,705.26, 53,415.37 and 21,714.88 is: 29,967.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,705.26 : 53,415.37 = 21,714.88 : x
  2. Step 2: Convert to fraction form
    38,705.26/53,415.37 = 21,714.88/x
  3. Step 3: Cross multiply
    38,705.26x = 53,415.37 × 21,714.88
  4. Step 4: Simplify right side
    38,705.26x = 1,159,908,241.13
  5. Step 5: Solve for x
    x = 1,159,908,241.13/38,705.26
  6. Step 6: Final answer
    x = 29,967.72

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1.5x scale

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.