Home / 25,419.28-35,078.56-15,483.28

Finding the Fourth Proportional to 25,419.28, 35,078.56 and 15,483.28

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Solution

The fourth proportional to 25,419.28, 35,078.56 and 15,483.28 is: 21,366.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,419.28 : 35,078.56 = 15,483.28 : x
  2. Step 2: Convert to fraction form
    25,419.28/35,078.56 = 15,483.28/x
  3. Step 3: Cross multiply
    25,419.28x = 35,078.56 × 15,483.28
  4. Step 4: Simplify right side
    25,419.28x = 543,131,166.48
  5. Step 5: Solve for x
    x = 543,131,166.48/25,419.28
  6. Step 6: Final answer
    x = 21,366.90

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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.