Home / 12,215,921.40-16,856,142.84-6,988,098.36

Finding the Fourth Proportional to 12,215,921.40, 16,856,142.84 and 6,988,098.36

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Solution

The fourth proportional to 12,215,921.40, 16,856,142.84 and 6,988,098.36 is: 9,642,529.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215,921.40 : 16,856,142.84 = 6,988,098.36 : x
  2. Step 2: Convert to fraction form
    12,215,921.40/16,856,142.84 = 6,988,098.36/x
  3. Step 3: Cross multiply
    12,215,921.40x = 16,856,142.84 × 6,988,098.36
  4. Step 4: Simplify right side
    12,215,921.40x = 117,792,384,136,129.75
  5. Step 5: Solve for x
    x = 117,792,384,136,129.75/12,215,921.40
  6. Step 6: Final answer
    x = 9,642,529.64

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1.5x scale

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.