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Finding the Fourth Proportional to 25,440.80, 35,108.28 and 14,262.80

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Solution

The fourth proportional to 25,440.80, 35,108.28 and 14,262.80 is: 19,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,440.80 : 35,108.28 = 14,262.80 : x
  2. Step 2: Convert to fraction form
    25,440.80/35,108.28 = 14,262.80/x
  3. Step 3: Cross multiply
    25,440.80x = 35,108.28 × 14,262.80
  4. Step 4: Simplify right side
    25,440.80x = 500,742,375.98
  5. Step 5: Solve for x
    x = 500,742,375.98/25,440.80
  6. Step 6: Final answer
    x = 19,682.65

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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.