Home / 12,127,908.70-18,191,863.05-8,071,242.40

Finding the Fourth Proportional to 12,127,908.70, 18,191,863.05 and 8,071,242.40

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Solution

The fourth proportional to 12,127,908.70, 18,191,863.05 and 8,071,242.40 is: 12,106,863.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,908.70 : 18,191,863.05 = 8,071,242.40 : x
  2. Step 2: Convert to fraction form
    12,127,908.70/18,191,863.05 = 8,071,242.40/x
  3. Step 3: Cross multiply
    12,127,908.70x = 18,191,863.05 × 8,071,242.40
  4. Step 4: Simplify right side
    12,127,908.70x = 146,830,936,384,153.34
  5. Step 5: Solve for x
    x = 146,830,936,384,153.34/12,127,908.70
  6. Step 6: Final answer
    x = 12,106,863.60

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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.