Home / 38,487.36-53,109.09-21,490.14

Finding the Fourth Proportional to 38,487.36, 53,109.09 and 21,490.14

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Solution

The fourth proportional to 38,487.36, 53,109.09 and 21,490.14 is: 29,654.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,487.36 : 53,109.09 = 21,490.14 : x
  2. Step 2: Convert to fraction form
    38,487.36/53,109.09 = 21,490.14/x
  3. Step 3: Cross multiply
    38,487.36x = 53,109.09 × 21,490.14
  4. Step 4: Simplify right side
    38,487.36x = 1,141,321,779.37
  5. Step 5: Solve for x
    x = 1,141,321,779.37/38,487.36
  6. Step 6: Final answer
    x = 29,654.46

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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.