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Finding the Fourth Proportional to 38,714.48, 53,430.03 and 21,723.31

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Solution

The fourth proportional to 38,714.48, 53,430.03 and 21,723.31 is: 29,980.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,714.48 : 53,430.03 = 21,723.31 : x
  2. Step 2: Convert to fraction form
    38,714.48/53,430.03 = 21,723.31/x
  3. Step 3: Cross multiply
    38,714.48x = 53,430.03 × 21,723.31
  4. Step 4: Simplify right side
    38,714.48x = 1,160,677,105.00
  5. Step 5: Solve for x
    x = 1,160,677,105.00/38,714.48
  6. Step 6: Final answer
    x = 29,980.44

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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.