Home / 27,943.12-38,561.33-15,845.90

Finding the Fourth Proportional to 27,943.12, 38,561.33 and 15,845.90

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Solution

The fourth proportional to 27,943.12, 38,561.33 and 15,845.90 is: 21,867.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,943.12 : 38,561.33 = 15,845.90 : x
  2. Step 2: Convert to fraction form
    27,943.12/38,561.33 = 15,845.90/x
  3. Step 3: Cross multiply
    27,943.12x = 38,561.33 × 15,845.90
  4. Step 4: Simplify right side
    27,943.12x = 611,038,759.01
  5. Step 5: Solve for x
    x = 611,038,759.01/27,943.12
  6. Step 6: Final answer
    x = 21,867.24

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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.