Home / 20,930,101.92-28,885,934.88-11,638,598.40

Finding the Fourth Proportional to 20,930,101.92, 28,885,934.88 and 11,638,598.40

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Solution

The fourth proportional to 20,930,101.92, 28,885,934.88 and 11,638,598.40 is: 16,062,597.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930,101.92 : 28,885,934.88 = 11,638,598.40 : x
  2. Step 2: Convert to fraction form
    20,930,101.92/28,885,934.88 = 11,638,598.40/x
  3. Step 3: Cross multiply
    20,930,101.92x = 28,885,934.88 × 11,638,598.40
  4. Step 4: Simplify right side
    20,930,101.92x = 336,191,795,476,872.19
  5. Step 5: Solve for x
    x = 336,191,795,476,872.19/20,930,101.92
  6. Step 6: Final answer
    x = 16,062,597.15

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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.