Home / 21,309,713.60-31,964,570.40-7,851,790.40

Finding the Fourth Proportional to 21,309,713.60, 31,964,570.40 and 7,851,790.40

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Solution

The fourth proportional to 21,309,713.60, 31,964,570.40 and 7,851,790.40 is: 11,777,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,713.60 : 31,964,570.40 = 7,851,790.40 : x
  2. Step 2: Convert to fraction form
    21,309,713.60/31,964,570.40 = 7,851,790.40/x
  3. Step 3: Cross multiply
    21,309,713.60x = 31,964,570.40 × 7,851,790.40
  4. Step 4: Simplify right side
    21,309,713.60x = 250,979,107,006,844.16
  5. Step 5: Solve for x
    x = 250,979,107,006,844.16/21,309,713.60
  6. Step 6: Final answer
    x = 11,777,685.60

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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.