Home / 12,376,139.40-17,078,807.75-6,869,193.21

Finding the Fourth Proportional to 12,376,139.40, 17,078,807.75 and 6,869,193.21

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Solution

The fourth proportional to 12,376,139.40, 17,078,807.75 and 6,869,193.21 is: 9,479,339.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,376,139.40 : 17,078,807.75 = 6,869,193.21 : x
  2. Step 2: Convert to fraction form
    12,376,139.40/17,078,807.75 = 6,869,193.21/x
  3. Step 3: Cross multiply
    12,376,139.40x = 17,078,807.75 × 6,869,193.21
  4. Step 4: Simplify right side
    12,376,139.40x = 117,317,630,196,849.42
  5. Step 5: Solve for x
    x = 117,317,630,196,849.42/12,376,139.40
  6. Step 6: Final answer
    x = 9,479,339.75

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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.