Home / 20,853.20-31,206.90-14,583.80

Finding the Fourth Proportional to 20,853.20, 31,206.90 and 14,583.80

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Solution

The fourth proportional to 20,853.20, 31,206.90 and 14,583.80 is: 21,824.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.20 : 31,206.90 = 14,583.80 : x
  2. Step 2: Convert to fraction form
    20,853.20/31,206.90 = 14,583.80/x
  3. Step 3: Cross multiply
    20,853.20x = 31,206.90 × 14,583.80
  4. Step 4: Simplify right side
    20,853.20x = 455,115,188.22
  5. Step 5: Solve for x
    x = 455,115,188.22/20,853.20
  6. Step 6: Final answer
    x = 21,824.72

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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.