Home / 38,995.76-53,813.94-21,090.62

Finding the Fourth Proportional to 38,995.76, 53,813.94 and 21,090.62

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Solution

The fourth proportional to 38,995.76, 53,813.94 and 21,090.62 is: 29,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,995.76 : 53,813.94 = 21,090.62 : x
  2. Step 2: Convert to fraction form
    38,995.76/53,813.94 = 21,090.62/x
  3. Step 3: Cross multiply
    38,995.76x = 53,813.94 × 21,090.62
  4. Step 4: Simplify right side
    38,995.76x = 1,134,969,359.24
  5. Step 5: Solve for x
    x = 1,134,969,359.24/38,995.76
  6. Step 6: Final answer
    x = 29,104.94

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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.