Home / 21,918,554.96-30,251,884.20-13,218,144.08

Finding the Fourth Proportional to 21,918,554.96, 30,251,884.20 and 13,218,144.08

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Solution

The fourth proportional to 21,918,554.96, 30,251,884.20 and 13,218,144.08 is: 18,243,618.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918,554.96 : 30,251,884.20 = 13,218,144.08 : x
  2. Step 2: Convert to fraction form
    21,918,554.96/30,251,884.20 = 13,218,144.08/x
  3. Step 3: Cross multiply
    21,918,554.96x = 30,251,884.20 × 13,218,144.08
  4. Step 4: Simplify right side
    21,918,554.96x = 399,873,764,047,075.50
  5. Step 5: Solve for x
    x = 399,873,764,047,075.50/21,918,554.96
  6. Step 6: Final answer
    x = 18,243,618.92

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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.