Home / 20,736.20-31,031.40-14,466.80

Finding the Fourth Proportional to 20,736.20, 31,031.40 and 14,466.80

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Solution

The fourth proportional to 20,736.20, 31,031.40 and 14,466.80 is: 21,649.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.20 : 31,031.40 = 14,466.80 : x
  2. Step 2: Convert to fraction form
    20,736.20/31,031.40 = 14,466.80/x
  3. Step 3: Cross multiply
    20,736.20x = 31,031.40 × 14,466.80
  4. Step 4: Simplify right side
    20,736.20x = 448,925,057.52
  5. Step 5: Solve for x
    x = 448,925,057.52/20,736.20
  6. Step 6: Final answer
    x = 21,649.34

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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.