Home / 38,985.44-53,799.87-21,080.40

Finding the Fourth Proportional to 38,985.44, 53,799.87 and 21,080.40

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Solution

The fourth proportional to 38,985.44, 53,799.87 and 21,080.40 is: 29,090.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.44 : 53,799.87 = 21,080.40 : x
  2. Step 2: Convert to fraction form
    38,985.44/53,799.87 = 21,080.40/x
  3. Step 3: Cross multiply
    38,985.44x = 53,799.87 × 21,080.40
  4. Step 4: Simplify right side
    38,985.44x = 1,134,122,674.15
  5. Step 5: Solve for x
    x = 1,134,122,674.15/38,985.44
  6. Step 6: Final answer
    x = 29,090.93

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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.