Home / 19,426.39-29,120.67-12,384.43

Finding the Fourth Proportional to 19,426.39, 29,120.67 and 12,384.43

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Solution

The fourth proportional to 19,426.39, 29,120.67 and 12,384.43 is: 18,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,426.39 : 29,120.67 = 12,384.43 : x
  2. Step 2: Convert to fraction form
    19,426.39/29,120.67 = 12,384.43/x
  3. Step 3: Cross multiply
    19,426.39x = 29,120.67 × 12,384.43
  4. Step 4: Simplify right side
    19,426.39x = 360,642,899.17
  5. Step 5: Solve for x
    x = 360,642,899.17/19,426.39
  6. Step 6: Final answer
    x = 18,564.59

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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.