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Finding the Fourth Proportional to 14,486,432.80, 21,729,649.20 and 12,848,807.20

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Solution

The fourth proportional to 14,486,432.80, 21,729,649.20 and 12,848,807.20 is: 19,273,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486,432.80 : 21,729,649.20 = 12,848,807.20 : x
  2. Step 2: Convert to fraction form
    14,486,432.80/21,729,649.20 = 12,848,807.20/x
  3. Step 3: Cross multiply
    14,486,432.80x = 21,729,649.20 × 12,848,807.20
  4. Step 4: Simplify right side
    14,486,432.80x = 279,200,073,094,434.22
  5. Step 5: Solve for x
    x = 279,200,073,094,434.22/14,486,432.80
  6. Step 6: Final answer
    x = 19,273,210.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.