Home / 12,810,302.80-17,678,206.20-7,009,108.72

Finding the Fourth Proportional to 12,810,302.80, 17,678,206.20 and 7,009,108.72

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Solution

The fourth proportional to 12,810,302.80, 17,678,206.20 and 7,009,108.72 is: 9,672,563.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810,302.80 : 17,678,206.20 = 7,009,108.72 : x
  2. Step 2: Convert to fraction form
    12,810,302.80/17,678,206.20 = 7,009,108.72/x
  3. Step 3: Cross multiply
    12,810,302.80x = 17,678,206.20 × 7,009,108.72
  4. Step 4: Simplify right side
    12,810,302.80x = 123,908,469,230,378.05
  5. Step 5: Solve for x
    x = 123,908,469,230,378.05/12,810,302.80
  6. Step 6: Final answer
    x = 9,672,563.65

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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.