Home / 21,811,405.40-32,787,966.90-18,693,618.20

Finding the Fourth Proportional to 21,811,405.40, 32,787,966.90 and 18,693,618.20

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Solution

The fourth proportional to 21,811,405.40, 32,787,966.90 and 18,693,618.20 is: 28,101,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811,405.40 : 32,787,966.90 = 18,693,618.20 : x
  2. Step 2: Convert to fraction form
    21,811,405.40/32,787,966.90 = 18,693,618.20/x
  3. Step 3: Cross multiply
    21,811,405.40x = 32,787,966.90 × 18,693,618.20
  4. Step 4: Simplify right side
    21,811,405.40x = 612,925,734,782,837.50
  5. Step 5: Solve for x
    x = 612,925,734,782,837.50/21,811,405.40
  6. Step 6: Final answer
    x = 28,101,157.33

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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.