Home / 20,186,138.30-30,243,121.95-12,284,507.30

Finding the Fourth Proportional to 20,186,138.30, 30,243,121.95 and 12,284,507.30

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Solution

The fourth proportional to 20,186,138.30, 30,243,121.95 and 12,284,507.30 is: 18,404,800.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186,138.30 : 30,243,121.95 = 12,284,507.30 : x
  2. Step 2: Convert to fraction form
    20,186,138.30/30,243,121.95 = 12,284,507.30/x
  3. Step 3: Cross multiply
    20,186,138.30x = 30,243,121.95 × 12,284,507.30
  4. Step 4: Simplify right side
    20,186,138.30x = 371,521,852,369,565.25
  5. Step 5: Solve for x
    x = 371,521,852,369,565.25/20,186,138.30
  6. Step 6: Final answer
    x = 18,404,800.70

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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.