Home / 43,309.12-64,969.83-13,325.84

Finding the Fourth Proportional to 43,309.12, 64,969.83 and 13,325.84

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Solution

The fourth proportional to 43,309.12, 64,969.83 and 13,325.84 is: 19,990.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,309.12 : 64,969.83 = 13,325.84 : x
  2. Step 2: Convert to fraction form
    43,309.12/64,969.83 = 13,325.84/x
  3. Step 3: Cross multiply
    43,309.12x = 64,969.83 × 13,325.84
  4. Step 4: Simplify right side
    43,309.12x = 865,777,592.72
  5. Step 5: Solve for x
    x = 865,777,592.72/43,309.12
  6. Step 6: Final answer
    x = 19,990.65

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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.