Home / 21,918,534.96-30,251,856.60-13,218,124.08

Finding the Fourth Proportional to 21,918,534.96, 30,251,856.60 and 13,218,124.08

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Solution

The fourth proportional to 21,918,534.96, 30,251,856.60 and 13,218,124.08 is: 18,243,591.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918,534.96 : 30,251,856.60 = 13,218,124.08 : x
  2. Step 2: Convert to fraction form
    21,918,534.96/30,251,856.60 = 13,218,124.08/x
  3. Step 3: Cross multiply
    21,918,534.96x = 30,251,856.60 × 13,218,124.08
  4. Step 4: Simplify right side
    21,918,534.96x = 399,872,794,189,166.94
  5. Step 5: Solve for x
    x = 399,872,794,189,166.94/21,918,534.96
  6. Step 6: Final answer
    x = 18,243,591.32

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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.