Home / 21,113.58-31,514.42-18,623.28

Finding the Fourth Proportional to 21,113.58, 31,514.42 and 18,623.28

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Solution

The fourth proportional to 21,113.58, 31,514.42 and 18,623.28 is: 27,797.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.58 : 31,514.42 = 18,623.28 : x
  2. Step 2: Convert to fraction form
    21,113.58/31,514.42 = 18,623.28/x
  3. Step 3: Cross multiply
    21,113.58x = 31,514.42 × 18,623.28
  4. Step 4: Simplify right side
    21,113.58x = 586,901,774.58
  5. Step 5: Solve for x
    x = 586,901,774.58/21,113.58
  6. Step 6: Final answer
    x = 27,797.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.