Home / 20,510,325.78-28,301,105.52-11,806,816.62

Finding the Fourth Proportional to 20,510,325.78, 28,301,105.52 and 11,806,816.62

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Solution

The fourth proportional to 20,510,325.78, 28,301,105.52 and 11,806,816.62 is: 16,291,597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510,325.78 : 28,301,105.52 = 11,806,816.62 : x
  2. Step 2: Convert to fraction form
    20,510,325.78/28,301,105.52 = 11,806,816.62/x
  3. Step 3: Cross multiply
    20,510,325.78x = 28,301,105.52 × 11,806,816.62
  4. Step 4: Simplify right side
    20,510,325.78x = 334,145,963,017,909.69
  5. Step 5: Solve for x
    x = 334,145,963,017,909.69/20,510,325.78
  6. Step 6: Final answer
    x = 16,291,597.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.