Home / 13,265.86-19,888.80-11,438.50

Finding the Fourth Proportional to 13,265.86, 19,888.80 and 11,438.50

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Solution

The fourth proportional to 13,265.86, 19,888.80 and 11,438.50 is: 17,149.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,265.86 : 19,888.80 = 11,438.50 : x
  2. Step 2: Convert to fraction form
    13,265.86/19,888.80 = 11,438.50/x
  3. Step 3: Cross multiply
    13,265.86x = 19,888.80 × 11,438.50
  4. Step 4: Simplify right side
    13,265.86x = 227,498,038.80
  5. Step 5: Solve for x
    x = 227,498,038.80/13,265.86
  6. Step 6: Final answer
    x = 17,149.14

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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.