Home / 29,131.49-40,208.10-20,624.78

Finding the Fourth Proportional to 29,131.49, 40,208.10 and 20,624.78

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Solution

The fourth proportional to 29,131.49, 40,208.10 and 20,624.78 is: 28,466.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,131.49 : 40,208.10 = 20,624.78 : x
  2. Step 2: Convert to fraction form
    29,131.49/40,208.10 = 20,624.78/x
  3. Step 3: Cross multiply
    29,131.49x = 40,208.10 × 20,624.78
  4. Step 4: Simplify right side
    29,131.49x = 829,283,015.68
  5. Step 5: Solve for x
    x = 829,283,015.68/29,131.49
  6. Step 6: Final answer
    x = 28,466.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.