Home / 38,995.18-53,813.30-21,090.02

Finding the Fourth Proportional to 38,995.18, 53,813.30 and 21,090.02

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Solution

The fourth proportional to 38,995.18, 53,813.30 and 21,090.02 is: 29,104.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,995.18 : 53,813.30 = 21,090.02 : x
  2. Step 2: Convert to fraction form
    38,995.18/53,813.30 = 21,090.02/x
  3. Step 3: Cross multiply
    38,995.18x = 53,813.30 × 21,090.02
  4. Step 4: Simplify right side
    38,995.18x = 1,134,923,573.27
  5. Step 5: Solve for x
    x = 1,134,923,573.27/38,995.18
  6. Step 6: Final answer
    x = 29,104.20

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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.