Home / 38,907.12-53,685.90-21,910.47

Finding the Fourth Proportional to 38,907.12, 53,685.90 and 21,910.47

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Solution

The fourth proportional to 38,907.12, 53,685.90 and 21,910.47 is: 30,233.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,907.12 : 53,685.90 = 21,910.47 : x
  2. Step 2: Convert to fraction form
    38,907.12/53,685.90 = 21,910.47/x
  3. Step 3: Cross multiply
    38,907.12x = 53,685.90 × 21,910.47
  4. Step 4: Simplify right side
    38,907.12x = 1,176,283,301.37
  5. Step 5: Solve for x
    x = 1,176,283,301.37/38,907.12
  6. Step 6: Final answer
    x = 30,233.11

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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.