Home / 25,458.87-35,131.65-15,381.35

Finding the Fourth Proportional to 25,458.87, 35,131.65 and 15,381.35

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Solution

The fourth proportional to 25,458.87, 35,131.65 and 15,381.35 is: 21,225.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,458.87 : 35,131.65 = 15,381.35 : x
  2. Step 2: Convert to fraction form
    25,458.87/35,131.65 = 15,381.35/x
  3. Step 3: Cross multiply
    25,458.87x = 35,131.65 × 15,381.35
  4. Step 4: Simplify right side
    25,458.87x = 540,372,204.73
  5. Step 5: Solve for x
    x = 540,372,204.73/25,458.87
  6. Step 6: Final answer
    x = 21,225.30

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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.