Home / 12,127,968.90-18,191,953.35-7,344,999.90

Finding the Fourth Proportional to 12,127,968.90, 18,191,953.35 and 7,344,999.90

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Solution

The fourth proportional to 12,127,968.90, 18,191,953.35 and 7,344,999.90 is: 11,017,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,968.90 : 18,191,953.35 = 7,344,999.90 : x
  2. Step 2: Convert to fraction form
    12,127,968.90/18,191,953.35 = 7,344,999.90/x
  3. Step 3: Cross multiply
    12,127,968.90x = 18,191,953.35 × 7,344,999.90
  4. Step 4: Simplify right side
    12,127,968.90x = 133,619,895,536,554.69
  5. Step 5: Solve for x
    x = 133,619,895,536,554.69/12,127,968.90
  6. Step 6: Final answer
    x = 11,017,499.85

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Similar ratio
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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.