Home / 20,770.63-31,165.05-10,907.66

Finding the Fourth Proportional to 20,770.63, 31,165.05 and 10,907.66

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Solution

The fourth proportional to 20,770.63, 31,165.05 and 10,907.66 is: 16,366.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.63 : 31,165.05 = 10,907.66 : x
  2. Step 2: Convert to fraction form
    20,770.63/31,165.05 = 10,907.66/x
  3. Step 3: Cross multiply
    20,770.63x = 31,165.05 × 10,907.66
  4. Step 4: Simplify right side
    20,770.63x = 339,937,888.10
  5. Step 5: Solve for x
    x = 339,937,888.10/20,770.63
  6. Step 6: Final answer
    x = 16,366.28

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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.