Home / 19,488.96-29,224.32-8,395.20

Finding the Fourth Proportional to 19,488.96, 29,224.32 and 8,395.20

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Solution

The fourth proportional to 19,488.96, 29,224.32 and 8,395.20 is: 12,588.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.96 : 29,224.32 = 8,395.20 : x
  2. Step 2: Convert to fraction form
    19,488.96/29,224.32 = 8,395.20/x
  3. Step 3: Cross multiply
    19,488.96x = 29,224.32 × 8,395.20
  4. Step 4: Simplify right side
    19,488.96x = 245,344,011.26
  5. Step 5: Solve for x
    x = 245,344,011.26/19,488.96
  6. Step 6: Final answer
    x = 12,588.87

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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.