Home / 21,705,418.88-29,953,404-11,915,619.20

Finding the Fourth Proportional to 21,705,418.88, 29,953,404 and 11,915,619.20

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Solution

The fourth proportional to 21,705,418.88, 29,953,404 and 11,915,619.20 is: 16,443,513.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,705,418.88 : 29,953,404 = 11,915,619.20 : x
  2. Step 2: Convert to fraction form
    21,705,418.88/29,953,404 = 11,915,619.20/x
  3. Step 3: Cross multiply
    21,705,418.88x = 29,953,404 × 11,915,619.20
  4. Step 4: Simplify right side
    21,705,418.88x = 356,913,355,807,756.75
  5. Step 5: Solve for x
    x = 356,913,355,807,756.75/21,705,418.88
  6. Step 6: Final answer
    x = 16,443,513.84

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1.5x scale

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.