Home / 21,868,813.55-30,176,376.36-12,078,673.88

Finding the Fourth Proportional to 21,868,813.55, 30,176,376.36 and 12,078,673.88

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Solution

The fourth proportional to 21,868,813.55, 30,176,376.36 and 12,078,673.88 is: 16,667,141.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868,813.55 : 30,176,376.36 = 12,078,673.88 : x
  2. Step 2: Convert to fraction form
    21,868,813.55/30,176,376.36 = 12,078,673.88/x
  3. Step 3: Cross multiply
    21,868,813.55x = 30,176,376.36 × 12,078,673.88
  4. Step 4: Simplify right side
    21,868,813.55x = 364,490,608,906,146.69
  5. Step 5: Solve for x
    x = 364,490,608,906,146.69/21,868,813.55
  6. Step 6: Final answer
    x = 16,667,141.45

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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.