Home / 21,127,732.18-31,685,744.64-7,479,080.74

Finding the Fourth Proportional to 21,127,732.18, 31,685,744.64 and 7,479,080.74

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Solution

The fourth proportional to 21,127,732.18, 31,685,744.64 and 7,479,080.74 is: 11,216,548.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127,732.18 : 31,685,744.64 = 7,479,080.74 : x
  2. Step 2: Convert to fraction form
    21,127,732.18/31,685,744.64 = 7,479,080.74/x
  3. Step 3: Cross multiply
    21,127,732.18x = 31,685,744.64 × 7,479,080.74
  4. Step 4: Simplify right side
    21,127,732.18x = 236,980,242,469,582.25
  5. Step 5: Solve for x
    x = 236,980,242,469,582.25/21,127,732.18
  6. Step 6: Final answer
    x = 11,216,548.96

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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.