Home / 25,403.39-35,073.78-15,857.81

Finding the Fourth Proportional to 25,403.39, 35,073.78 and 15,857.81

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Solution

The fourth proportional to 25,403.39, 35,073.78 and 15,857.81 is: 21,894.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,403.39 : 35,073.78 = 15,857.81 : x
  2. Step 2: Convert to fraction form
    25,403.39/35,073.78 = 15,857.81/x
  3. Step 3: Cross multiply
    25,403.39x = 35,073.78 × 15,857.81
  4. Step 4: Simplify right side
    25,403.39x = 556,193,163.85
  5. Step 5: Solve for x
    x = 556,193,163.85/25,403.39
  6. Step 6: Final answer
    x = 21,894.45

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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.