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Finding the Fourth Proportional to 15,978,794.40, 23,978,033.10 and 6,885,248.40

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Solution

The fourth proportional to 15,978,794.40, 23,978,033.10 and 6,885,248.40 is: 10,332,113.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978,794.40 : 23,978,033.10 = 6,885,248.40 : x
  2. Step 2: Convert to fraction form
    15,978,794.40/23,978,033.10 = 6,885,248.40/x
  3. Step 3: Cross multiply
    15,978,794.40x = 23,978,033.10 × 6,885,248.40
  4. Step 4: Simplify right side
    15,978,794.40x = 165,094,714,036,922.06
  5. Step 5: Solve for x
    x = 165,094,714,036,922.06/15,978,794.40
  6. Step 6: Final answer
    x = 10,332,113.29

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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.