Home / 21,856,783.88-30,165,006.92-12,439,864.55

Finding the Fourth Proportional to 21,856,783.88, 30,165,006.92 and 12,439,864.55

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Solution

The fourth proportional to 21,856,783.88, 30,165,006.92 and 12,439,864.55 is: 17,168,518.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856,783.88 : 30,165,006.92 = 12,439,864.55 : x
  2. Step 2: Convert to fraction form
    21,856,783.88/30,165,006.92 = 12,439,864.55/x
  3. Step 3: Cross multiply
    21,856,783.88x = 30,165,006.92 × 12,439,864.55
  4. Step 4: Simplify right side
    21,856,783.88x = 375,248,600,021,588.31
  5. Step 5: Solve for x
    x = 375,248,600,021,588.31/21,856,783.88
  6. Step 6: Final answer
    x = 17,168,518.58

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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.