Home / 13,328,971.48-18,394,005.65-7,448,605.71

Finding the Fourth Proportional to 13,328,971.48, 18,394,005.65 and 7,448,605.71

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Solution

The fourth proportional to 13,328,971.48, 18,394,005.65 and 7,448,605.71 is: 10,279,089.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328,971.48 : 18,394,005.65 = 7,448,605.71 : x
  2. Step 2: Convert to fraction form
    13,328,971.48/18,394,005.65 = 7,448,605.71/x
  3. Step 3: Cross multiply
    13,328,971.48x = 18,394,005.65 × 7,448,605.71
  4. Step 4: Simplify right side
    13,328,971.48x = 137,009,695,514,362.25
  5. Step 5: Solve for x
    x = 137,009,695,514,362.25/13,328,971.48
  6. Step 6: Final answer
    x = 10,279,089.85

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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.