Home / 21,357,812.06-29,465,645.64-15,789,429.26

Finding the Fourth Proportional to 21,357,812.06, 29,465,645.64 and 15,789,429.26

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Solution

The fourth proportional to 21,357,812.06, 29,465,645.64 and 15,789,429.26 is: 21,783,398.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357,812.06 : 29,465,645.64 = 15,789,429.26 : x
  2. Step 2: Convert to fraction form
    21,357,812.06/29,465,645.64 = 15,789,429.26/x
  3. Step 3: Cross multiply
    21,357,812.06x = 29,465,645.64 × 15,789,429.26
  4. Step 4: Simplify right side
    21,357,812.06x = 465,245,727,433,007.44
  5. Step 5: Solve for x
    x = 465,245,727,433,007.44/21,357,812.06
  6. Step 6: Final answer
    x = 21,783,398.32

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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.