Home / 25,453.98-35,118.32-15,385.40

Finding the Fourth Proportional to 25,453.98, 35,118.32 and 15,385.40

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Solution

The fourth proportional to 25,453.98, 35,118.32 and 15,385.40 is: 21,226.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,453.98 : 35,118.32 = 15,385.40 : x
  2. Step 2: Convert to fraction form
    25,453.98/35,118.32 = 15,385.40/x
  3. Step 3: Cross multiply
    25,453.98x = 35,118.32 × 15,385.40
  4. Step 4: Simplify right side
    25,453.98x = 540,309,400.53
  5. Step 5: Solve for x
    x = 540,309,400.53/25,453.98
  6. Step 6: Final answer
    x = 21,226.91

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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.