Home / 12,912,010.80-19,368,016.20-6,620,554.80

Finding the Fourth Proportional to 12,912,010.80, 19,368,016.20 and 6,620,554.80

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Solution

The fourth proportional to 12,912,010.80, 19,368,016.20 and 6,620,554.80 is: 9,930,832.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912,010.80 : 19,368,016.20 = 6,620,554.80 : x
  2. Step 2: Convert to fraction form
    12,912,010.80/19,368,016.20 = 6,620,554.80/x
  3. Step 3: Cross multiply
    12,912,010.80x = 19,368,016.20 × 6,620,554.80
  4. Step 4: Simplify right side
    12,912,010.80x = 128,227,012,619,387.75
  5. Step 5: Solve for x
    x = 128,227,012,619,387.75/12,912,010.80
  6. Step 6: Final answer
    x = 9,930,832.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.