Home / 42,809.26-64,216.70-11,220.09

Finding the Fourth Proportional to 42,809.26, 64,216.70 and 11,220.09

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Solution

The fourth proportional to 42,809.26, 64,216.70 and 11,220.09 is: 16,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,809.26 : 64,216.70 = 11,220.09 : x
  2. Step 2: Convert to fraction form
    42,809.26/64,216.70 = 11,220.09/x
  3. Step 3: Cross multiply
    42,809.26x = 64,216.70 × 11,220.09
  4. Step 4: Simplify right side
    42,809.26x = 720,517,440.49
  5. Step 5: Solve for x
    x = 720,517,440.49/42,809.26
  6. Step 6: Final answer
    x = 16,830.88

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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.