Home / 21,012,768.48-29,002,129.24-13,272,888

Finding the Fourth Proportional to 21,012,768.48, 29,002,129.24 and 13,272,888

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Solution

The fourth proportional to 21,012,768.48, 29,002,129.24 and 13,272,888 is: 18,319,433.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012,768.48 : 29,002,129.24 = 13,272,888 : x
  2. Step 2: Convert to fraction form
    21,012,768.48/29,002,129.24 = 13,272,888/x
  3. Step 3: Cross multiply
    21,012,768.48x = 29,002,129.24 × 13,272,888
  4. Step 4: Simplify right side
    21,012,768.48x = 384,942,013,164,045.12
  5. Step 5: Solve for x
    x = 384,942,013,164,045.12/21,012,768.48
  6. Step 6: Final answer
    x = 18,319,433.42

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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.