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Finding the Fourth Proportional to 21,836,444.80, 32,704,900.80 and 12,878,492.80

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Solution

The fourth proportional to 21,836,444.80, 32,704,900.80 and 12,878,492.80 is: 19,288,388.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836,444.80 : 32,704,900.80 = 12,878,492.80 : x
  2. Step 2: Convert to fraction form
    21,836,444.80/32,704,900.80 = 12,878,492.80/x
  3. Step 3: Cross multiply
    21,836,444.80x = 32,704,900.80 × 12,878,492.80
  4. Step 4: Simplify right side
    21,836,444.80x = 421,189,829,477,514.25
  5. Step 5: Solve for x
    x = 421,189,829,477,514.25/21,836,444.80
  6. Step 6: Final answer
    x = 19,288,388.44

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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.