Home / 13,921,456.86-19,211,321.47-7,726,143.91

Finding the Fourth Proportional to 13,921,456.86, 19,211,321.47 and 7,726,143.91

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Solution

The fourth proportional to 13,921,456.86, 19,211,321.47 and 7,726,143.91 is: 10,661,918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921,456.86 : 19,211,321.47 = 7,726,143.91 : x
  2. Step 2: Convert to fraction form
    13,921,456.86/19,211,321.47 = 7,726,143.91/x
  3. Step 3: Cross multiply
    13,921,456.86x = 19,211,321.47 × 7,726,143.91
  4. Step 4: Simplify right side
    13,921,456.86x = 148,429,434,378,492.75
  5. Step 5: Solve for x
    x = 148,429,434,378,492.75/13,921,456.86
  6. Step 6: Final answer
    x = 10,661,918.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.