Home / 21,681,768.15-29,920,882.82-11,892,292.02

Finding the Fourth Proportional to 21,681,768.15, 29,920,882.82 and 11,892,292.02

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Solution

The fourth proportional to 21,681,768.15, 29,920,882.82 and 11,892,292.02 is: 16,411,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681,768.15 : 29,920,882.82 = 11,892,292.02 : x
  2. Step 2: Convert to fraction form
    21,681,768.15/29,920,882.82 = 11,892,292.02/x
  3. Step 3: Cross multiply
    21,681,768.15x = 29,920,882.82 × 11,892,292.02
  4. Step 4: Simplify right side
    21,681,768.15x = 355,827,875,932,179.62
  5. Step 5: Solve for x
    x = 355,827,875,932,179.62/21,681,768.15
  6. Step 6: Final answer
    x = 16,411,386.45

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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.