Home / 38,995.72-53,814.10-21,090.73

Finding the Fourth Proportional to 38,995.72, 53,814.10 and 21,090.73

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Solution

The fourth proportional to 38,995.72, 53,814.10 and 21,090.73 is: 29,105.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,995.72 : 53,814.10 = 21,090.73 : x
  2. Step 2: Convert to fraction form
    38,995.72/53,814.10 = 21,090.73/x
  3. Step 3: Cross multiply
    38,995.72x = 53,814.10 × 21,090.73
  4. Step 4: Simplify right side
    38,995.72x = 1,134,978,653.29
  5. Step 5: Solve for x
    x = 1,134,978,653.29/38,995.72
  6. Step 6: Final answer
    x = 29,105.21

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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.