Home / 21,681,784.62-29,920,905.57-11,892,308.58

Finding the Fourth Proportional to 21,681,784.62, 29,920,905.57 and 11,892,308.58

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Solution

The fourth proportional to 21,681,784.62, 29,920,905.57 and 11,892,308.58 is: 16,411,409.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681,784.62 : 29,920,905.57 = 11,892,308.58 : x
  2. Step 2: Convert to fraction form
    21,681,784.62/29,920,905.57 = 11,892,308.58/x
  3. Step 3: Cross multiply
    21,681,784.62x = 29,920,905.57 × 11,892,308.58
  4. Step 4: Simplify right side
    21,681,784.62x = 355,828,642,031,480.81
  5. Step 5: Solve for x
    x = 355,828,642,031,480.81/21,681,784.62
  6. Step 6: Final answer
    x = 16,411,409.31

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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.