Home / 43,308.99-64,969.64-13,325.72

Finding the Fourth Proportional to 43,308.99, 64,969.64 and 13,325.72

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Solution

The fourth proportional to 43,308.99, 64,969.64 and 13,325.72 is: 19,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,308.99 : 64,969.64 = 13,325.72 : x
  2. Step 2: Convert to fraction form
    43,308.99/64,969.64 = 13,325.72/x
  3. Step 3: Cross multiply
    43,308.99x = 64,969.64 × 13,325.72
  4. Step 4: Simplify right side
    43,308.99x = 865,766,964.59
  5. Step 5: Solve for x
    x = 865,766,964.59/43,308.99
  6. Step 6: Final answer
    x = 19,990.47

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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.