Home / 25,887.12-35,728.08-15,821.40

Finding the Fourth Proportional to 25,887.12, 35,728.08 and 15,821.40

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Solution

The fourth proportional to 25,887.12, 35,728.08 and 15,821.40 is: 21,835.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,887.12 : 35,728.08 = 15,821.40 : x
  2. Step 2: Convert to fraction form
    25,887.12/35,728.08 = 15,821.40/x
  3. Step 3: Cross multiply
    25,887.12x = 35,728.08 × 15,821.40
  4. Step 4: Simplify right side
    25,887.12x = 565,268,244.91
  5. Step 5: Solve for x
    x = 565,268,244.91/25,887.12
  6. Step 6: Final answer
    x = 21,835.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.