Home / 15,273,261,972.79-21,078,936,388.49-9,251,590,692.65

Finding the Fourth Proportional to 15,273,261,972.79, 21,078,936,388.49 and 9,251,590,692.65

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Solution

The fourth proportional to 15,273,261,972.79, 21,078,936,388.49 and 9,251,590,692.65 is: 12,768,306,603.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,273,261,972.79 : 21,078,936,388.49 = 9,251,590,692.65 : x
  2. Step 2: Convert to fraction form
    15,273,261,972.79/21,078,936,388.49 = 9,251,590,692.65/x
  3. Step 3: Cross multiply
    15,273,261,972.79x = 21,078,936,388.49 × 9,251,590,692.65
  4. Step 4: Simplify right side
    15,273,261,972.79x = 195,013,691,702,563,864,576
  5. Step 5: Solve for x
    x = 195,013,691,702,563,864,576/15,273,261,972.79
  6. Step 6: Final answer
    x = 12,768,306,603.40

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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.