Home / 20,403,953.20-30,605,929.80-6,940,781.20

Finding the Fourth Proportional to 20,403,953.20, 30,605,929.80 and 6,940,781.20

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Solution

The fourth proportional to 20,403,953.20, 30,605,929.80 and 6,940,781.20 is: 10,411,171.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403,953.20 : 30,605,929.80 = 6,940,781.20 : x
  2. Step 2: Convert to fraction form
    20,403,953.20/30,605,929.80 = 6,940,781.20/x
  3. Step 3: Cross multiply
    20,403,953.20x = 30,605,929.80 × 6,940,781.20
  4. Step 4: Simplify right side
    20,403,953.20x = 212,429,062,164,359.78
  5. Step 5: Solve for x
    x = 212,429,062,164,359.78/20,403,953.20
  6. Step 6: Final answer
    x = 10,411,171.80

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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.