Home / 14,156,768.40-21,131,802.81-12,147,921.42

Finding the Fourth Proportional to 14,156,768.40, 21,131,802.81 and 12,147,921.42

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Solution

The fourth proportional to 14,156,768.40, 21,131,802.81 and 12,147,921.42 is: 18,133,197.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,156,768.40 : 21,131,802.81 = 12,147,921.42 : x
  2. Step 2: Convert to fraction form
    14,156,768.40/21,131,802.81 = 12,147,921.42/x
  3. Step 3: Cross multiply
    14,156,768.40x = 21,131,802.81 × 12,147,921.42
  4. Step 4: Simplify right side
    14,156,768.40x = 256,707,479,998,815.19
  5. Step 5: Solve for x
    x = 256,707,479,998,815.19/14,156,768.40
  6. Step 6: Final answer
    x = 18,133,197.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.