Home / 38,416.89-53,015.09-21,421.34

Finding the Fourth Proportional to 38,416.89, 53,015.09 and 21,421.34

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Solution

The fourth proportional to 38,416.89, 53,015.09 and 21,421.34 is: 29,561.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,416.89 : 53,015.09 = 21,421.34 : x
  2. Step 2: Convert to fraction form
    38,416.89/53,015.09 = 21,421.34/x
  3. Step 3: Cross multiply
    38,416.89x = 53,015.09 × 21,421.34
  4. Step 4: Simplify right side
    38,416.89x = 1,135,654,513.35
  5. Step 5: Solve for x
    x = 1,135,654,513.35/38,416.89
  6. Step 6: Final answer
    x = 29,561.33

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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.