Home / 21,571,990.20-32,357,985.30-18,674,652.60

Finding the Fourth Proportional to 21,571,990.20, 32,357,985.30 and 18,674,652.60

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Solution

The fourth proportional to 21,571,990.20, 32,357,985.30 and 18,674,652.60 is: 28,011,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571,990.20 : 32,357,985.30 = 18,674,652.60 : x
  2. Step 2: Convert to fraction form
    21,571,990.20/32,357,985.30 = 18,674,652.60/x
  3. Step 3: Cross multiply
    21,571,990.20x = 32,357,985.30 × 18,674,652.60
  4. Step 4: Simplify right side
    21,571,990.20x = 604,274,134,313,406.88
  5. Step 5: Solve for x
    x = 604,274,134,313,406.88/21,571,990.20
  6. Step 6: Final answer
    x = 28,011,978.90

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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.