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Finding the Fourth Proportional to 15,000,513.21, 20,700,714.11 and 8,124,974.01

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Solution

The fourth proportional to 15,000,513.21, 20,700,714.11 and 8,124,974.01 is: 11,212,467.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000,513.21 : 20,700,714.11 = 8,124,974.01 : x
  2. Step 2: Convert to fraction form
    15,000,513.21/20,700,714.11 = 8,124,974.01/x
  3. Step 3: Cross multiply
    15,000,513.21x = 20,700,714.11 × 8,124,974.01
  4. Step 4: Simplify right side
    15,000,513.21x = 168,192,764,091,565.41
  5. Step 5: Solve for x
    x = 168,192,764,091,565.41/15,000,513.21
  6. Step 6: Final answer
    x = 11,212,467.32

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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.