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Finding the Fourth Proportional to 25,379.80, 35,018.22 and 14,763.40

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Solution

The fourth proportional to 25,379.80, 35,018.22 and 14,763.40 is: 20,370.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,379.80 : 35,018.22 = 14,763.40 : x
  2. Step 2: Convert to fraction form
    25,379.80/35,018.22 = 14,763.40/x
  3. Step 3: Cross multiply
    25,379.80x = 35,018.22 × 14,763.40
  4. Step 4: Simplify right side
    25,379.80x = 516,987,989.15
  5. Step 5: Solve for x
    x = 516,987,989.15/25,379.80
  6. Step 6: Final answer
    x = 20,370.06

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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.