Home / 21,939.01-30,248.37-18,310.28

Finding the Fourth Proportional to 21,939.01, 30,248.37 and 18,310.28

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Solution

The fourth proportional to 21,939.01, 30,248.37 and 18,310.28 is: 25,245.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.01 : 30,248.37 = 18,310.28 : x
  2. Step 2: Convert to fraction form
    21,939.01/30,248.37 = 18,310.28/x
  3. Step 3: Cross multiply
    21,939.01x = 30,248.37 × 18,310.28
  4. Step 4: Simplify right side
    21,939.01x = 553,855,973.00
  5. Step 5: Solve for x
    x = 553,855,973.00/21,939.01
  6. Step 6: Final answer
    x = 25,245.26

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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.