Home / 21,012,369.05-31,519,498.23-6,438,221.10

Finding the Fourth Proportional to 21,012,369.05, 31,519,498.23 and 6,438,221.10

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Solution

The fourth proportional to 21,012,369.05, 31,519,498.23 and 6,438,221.10 is: 9,657,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012,369.05 : 31,519,498.23 = 6,438,221.10 : x
  2. Step 2: Convert to fraction form
    21,012,369.05/31,519,498.23 = 6,438,221.10/x
  3. Step 3: Cross multiply
    21,012,369.05x = 31,519,498.23 × 6,438,221.10
  4. Step 4: Simplify right side
    21,012,369.05x = 202,929,498,565,798.66
  5. Step 5: Solve for x
    x = 202,929,498,565,798.66/21,012,369.05
  6. Step 6: Final answer
    x = 9,657,621.10

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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.