Home / 43,266.80-64,895.40-12,105.20

Finding the Fourth Proportional to 43,266.80, 64,895.40 and 12,105.20

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Solution

The fourth proportional to 43,266.80, 64,895.40 and 12,105.20 is: 18,156.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,266.80 : 64,895.40 = 12,105.20 : x
  2. Step 2: Convert to fraction form
    43,266.80/64,895.40 = 12,105.20/x
  3. Step 3: Cross multiply
    43,266.80x = 64,895.40 × 12,105.20
  4. Step 4: Simplify right side
    43,266.80x = 785,571,796.08
  5. Step 5: Solve for x
    x = 785,571,796.08/43,266.80
  6. Step 6: Final answer
    x = 18,156.46

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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.