Home / 13,222,056.20-18,246,437.51-7,420,837.94

Finding the Fourth Proportional to 13,222,056.20, 18,246,437.51 and 7,420,837.94

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Solution

The fourth proportional to 13,222,056.20, 18,246,437.51 and 7,420,837.94 is: 10,240,756.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222,056.20 : 18,246,437.51 = 7,420,837.94 : x
  2. Step 2: Convert to fraction form
    13,222,056.20/18,246,437.51 = 7,420,837.94/x
  3. Step 3: Cross multiply
    13,222,056.20x = 18,246,437.51 × 7,420,837.94
  4. Step 4: Simplify right side
    13,222,056.20x = 135,403,855,684,134.88
  5. Step 5: Solve for x
    x = 135,403,855,684,134.88/13,222,056.20
  6. Step 6: Final answer
    x = 10,240,756.33

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1.5x scale

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.