Home / 19,218.40-28,775.49-9,964.96

Finding the Fourth Proportional to 19,218.40, 28,775.49 and 9,964.96

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Solution

The fourth proportional to 19,218.40, 28,775.49 and 9,964.96 is: 14,920.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.40 : 28,775.49 = 9,964.96 : x
  2. Step 2: Convert to fraction form
    19,218.40/28,775.49 = 9,964.96/x
  3. Step 3: Cross multiply
    19,218.40x = 28,775.49 × 9,964.96
  4. Step 4: Simplify right side
    19,218.40x = 286,746,606.83
  5. Step 5: Solve for x
    x = 286,746,606.83/19,218.40
  6. Step 6: Final answer
    x = 14,920.42

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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.