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Finding the Fourth Proportional to 13,003,884.90, 17,932,978.02 and 7,776,041.66

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Solution

The fourth proportional to 13,003,884.90, 17,932,978.02 and 7,776,041.66 is: 10,723,532.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,003,884.90 : 17,932,978.02 = 7,776,041.66 : x
  2. Step 2: Convert to fraction form
    13,003,884.90/17,932,978.02 = 7,776,041.66/x
  3. Step 3: Cross multiply
    13,003,884.90x = 17,932,978.02 × 7,776,041.66
  4. Step 4: Simplify right side
    13,003,884.90x = 139,447,584,081,719.42
  5. Step 5: Solve for x
    x = 139,447,584,081,719.42/13,003,884.90
  6. Step 6: Final answer
    x = 10,723,532.63

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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.