Home / 21,005,876.85-28,988,622.63-11,713,356.22

Finding the Fourth Proportional to 21,005,876.85, 28,988,622.63 and 11,713,356.22

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Solution

The fourth proportional to 21,005,876.85, 28,988,622.63 and 11,713,356.22 is: 16,164,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,876.85 : 28,988,622.63 = 11,713,356.22 : x
  2. Step 2: Convert to fraction form
    21,005,876.85/28,988,622.63 = 11,713,356.22/x
  3. Step 3: Cross multiply
    21,005,876.85x = 28,988,622.63 × 11,713,356.22
  4. Step 4: Simplify right side
    21,005,876.85x = 339,554,062,988,833.38
  5. Step 5: Solve for x
    x = 339,554,062,988,833.38/21,005,876.85
  6. Step 6: Final answer
    x = 16,164,717.40

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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.