Home / 38,985.52-53,799.99-21,080.49

Finding the Fourth Proportional to 38,985.52, 53,799.99 and 21,080.49

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Solution

The fourth proportional to 38,985.52, 53,799.99 and 21,080.49 is: 29,091.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.52 : 53,799.99 = 21,080.49 : x
  2. Step 2: Convert to fraction form
    38,985.52/53,799.99 = 21,080.49/x
  3. Step 3: Cross multiply
    38,985.52x = 53,799.99 × 21,080.49
  4. Step 4: Simplify right side
    38,985.52x = 1,134,129,930.84
  5. Step 5: Solve for x
    x = 1,134,129,930.84/38,985.52
  6. Step 6: Final answer
    x = 29,091.05

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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.