Home / 20,655,306.32-30,983,968.20-7,873,428.56

Finding the Fourth Proportional to 20,655,306.32, 30,983,968.20 and 7,873,428.56

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Solution

The fourth proportional to 20,655,306.32, 30,983,968.20 and 7,873,428.56 is: 11,810,527.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655,306.32 : 30,983,968.20 = 7,873,428.56 : x
  2. Step 2: Convert to fraction form
    20,655,306.32/30,983,968.20 = 7,873,428.56/x
  3. Step 3: Cross multiply
    20,655,306.32x = 30,983,968.20 × 7,873,428.56
  4. Step 4: Simplify right side
    20,655,306.32x = 243,950,060,128,011.78
  5. Step 5: Solve for x
    x = 243,950,060,128,011.78/20,655,306.32
  6. Step 6: Final answer
    x = 11,810,527.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.