Home / 21,918,533.96-30,251,855.22-13,218,123.08

Finding the Fourth Proportional to 21,918,533.96, 30,251,855.22 and 13,218,123.08

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Solution

The fourth proportional to 21,918,533.96, 30,251,855.22 and 13,218,123.08 is: 18,243,589.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918,533.96 : 30,251,855.22 = 13,218,123.08 : x
  2. Step 2: Convert to fraction form
    21,918,533.96/30,251,855.22 = 13,218,123.08/x
  3. Step 3: Cross multiply
    21,918,533.96x = 30,251,855.22 × 13,218,123.08
  4. Step 4: Simplify right side
    21,918,533.96x = 399,872,745,696,300.44
  5. Step 5: Solve for x
    x = 399,872,745,696,300.44/21,918,533.96
  6. Step 6: Final answer
    x = 18,243,589.94

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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.