Home / 13,209.29-19,815.16-4,777.91

Finding the Fourth Proportional to 13,209.29, 19,815.16 and 4,777.91

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Solution

The fourth proportional to 13,209.29, 19,815.16 and 4,777.91 is: 7,167.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.29 : 19,815.16 = 4,777.91 : x
  2. Step 2: Convert to fraction form
    13,209.29/19,815.16 = 4,777.91/x
  3. Step 3: Cross multiply
    13,209.29x = 19,815.16 × 4,777.91
  4. Step 4: Simplify right side
    13,209.29x = 94,675,051.12
  5. Step 5: Solve for x
    x = 94,675,051.12/13,209.29
  6. Step 6: Final answer
    x = 7,167.31

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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.