Home / 25,503.45-35,189.00-15,431.64

Finding the Fourth Proportional to 25,503.45, 35,189.00 and 15,431.64

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Solution

The fourth proportional to 25,503.45, 35,189.00 and 15,431.64 is: 21,292.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,503.45 : 35,189.00 = 15,431.64 : x
  2. Step 2: Convert to fraction form
    25,503.45/35,189.00 = 15,431.64/x
  3. Step 3: Cross multiply
    25,503.45x = 35,189.00 × 15,431.64
  4. Step 4: Simplify right side
    25,503.45x = 543,023,902.80
  5. Step 5: Solve for x
    x = 543,023,902.80/25,503.45
  6. Step 6: Final answer
    x = 21,292.17

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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.