Home / 20,901.58-31,335.96-14,307.78

Finding the Fourth Proportional to 20,901.58, 31,335.96 and 14,307.78

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Solution

The fourth proportional to 20,901.58, 31,335.96 and 14,307.78 is: 21,450.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.58 : 31,335.96 = 14,307.78 : x
  2. Step 2: Convert to fraction form
    20,901.58/31,335.96 = 14,307.78/x
  3. Step 3: Cross multiply
    20,901.58x = 31,335.96 × 14,307.78
  4. Step 4: Simplify right side
    20,901.58x = 448,348,021.77
  5. Step 5: Solve for x
    x = 448,348,021.77/20,901.58
  6. Step 6: Final answer
    x = 21,450.44

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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.