Home / 28,421,040,834.16-39,219,482,520.90-15,558,192,460.96

Finding the Fourth Proportional to 28,421,040,834.16, 39,219,482,520.90 and 15,558,192,460.96

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Solution

The fourth proportional to 28,421,040,834.16, 39,219,482,520.90 and 15,558,192,460.96 is: 21,469,455,001.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421,040,834.16 : 39,219,482,520.90 = 15,558,192,460.96 : x
  2. Step 2: Convert to fraction form
    28,421,040,834.16/39,219,482,520.90 = 15,558,192,460.96/x
  3. Step 3: Cross multiply
    28,421,040,834.16x = 39,219,482,520.90 × 15,558,192,460.96
  4. Step 4: Simplify right side
    28,421,040,834.16x = 610,184,257,279,418,826,752
  5. Step 5: Solve for x
    x = 610,184,257,279,418,826,752/28,421,040,834.16
  6. Step 6: Final answer
    x = 21,469,455,001.31

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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.