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Finding the Fourth Proportional to 15,847,873.01, 21,870,605.39 and 8,878,844.42

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Solution

The fourth proportional to 15,847,873.01, 21,870,605.39 and 8,878,844.42 is: 12,253,108.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,847,873.01 : 21,870,605.39 = 8,878,844.42 : x
  2. Step 2: Convert to fraction form
    15,847,873.01/21,870,605.39 = 8,878,844.42/x
  3. Step 3: Cross multiply
    15,847,873.01x = 21,870,605.39 × 8,878,844.42
  4. Step 4: Simplify right side
    15,847,873.01x = 194,185,702,475,276.16
  5. Step 5: Solve for x
    x = 194,185,702,475,276.16/15,847,873.01
  6. Step 6: Final answer
    x = 12,253,108.19

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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.