Home / 12,586,933.40-18,885,065.70-12,120,373.40

Finding the Fourth Proportional to 12,586,933.40, 18,885,065.70 and 12,120,373.40

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Solution

The fourth proportional to 12,586,933.40, 18,885,065.70 and 12,120,373.40 is: 18,185,052.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586,933.40 : 18,885,065.70 = 12,120,373.40 : x
  2. Step 2: Convert to fraction form
    12,586,933.40/18,885,065.70 = 12,120,373.40/x
  3. Step 3: Cross multiply
    12,586,933.40x = 18,885,065.70 × 12,120,373.40
  4. Step 4: Simplify right side
    12,586,933.40x = 228,894,047,967,532.38
  5. Step 5: Solve for x
    x = 228,894,047,967,532.38/12,586,933.40
  6. Step 6: Final answer
    x = 18,185,052.76

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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.