Home / 12,964,431.25-17,890,878.40-7,163,171.66

Finding the Fourth Proportional to 12,964,431.25, 17,890,878.40 and 7,163,171.66

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Solution

The fourth proportional to 12,964,431.25, 17,890,878.40 and 7,163,171.66 is: 9,885,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,964,431.25 : 17,890,878.40 = 7,163,171.66 : x
  2. Step 2: Convert to fraction form
    12,964,431.25/17,890,878.40 = 7,163,171.66/x
  3. Step 3: Cross multiply
    12,964,431.25x = 17,890,878.40 × 7,163,171.66
  4. Step 4: Simplify right side
    12,964,431.25x = 128,155,433,174,355.42
  5. Step 5: Solve for x
    x = 128,155,433,174,355.42/12,964,431.25
  6. Step 6: Final answer
    x = 9,885,156.60

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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.