Home / 21,153,436.70-29,197,796.10-12,456,653.86

Finding the Fourth Proportional to 21,153,436.70, 29,197,796.10 and 12,456,653.86

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Solution

The fourth proportional to 21,153,436.70, 29,197,796.10 and 12,456,653.86 is: 17,193,747.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153,436.70 : 29,197,796.10 = 12,456,653.86 : x
  2. Step 2: Convert to fraction form
    21,153,436.70/29,197,796.10 = 12,456,653.86/x
  3. Step 3: Cross multiply
    21,153,436.70x = 29,197,796.10 × 12,456,653.86
  4. Step 4: Simplify right side
    21,153,436.70x = 363,706,839,492,557.94
  5. Step 5: Solve for x
    x = 363,706,839,492,557.94/21,153,436.70
  6. Step 6: Final answer
    x = 17,193,747.03

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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.