Home / 20,270.48-30,405.72-14,758.90

Finding the Fourth Proportional to 20,270.48, 30,405.72 and 14,758.90

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Solution

The fourth proportional to 20,270.48, 30,405.72 and 14,758.90 is: 22,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.48 : 30,405.72 = 14,758.90 : x
  2. Step 2: Convert to fraction form
    20,270.48/30,405.72 = 14,758.90/x
  3. Step 3: Cross multiply
    20,270.48x = 30,405.72 × 14,758.90
  4. Step 4: Simplify right side
    20,270.48x = 448,755,018.92
  5. Step 5: Solve for x
    x = 448,755,018.92/20,270.48
  6. Step 6: Final answer
    x = 22,138.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.