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Finding the Fourth Proportional to 13,023,978.70, 17,972,475.01 and 7,222,635.88

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Solution

The fourth proportional to 13,023,978.70, 17,972,475.01 and 7,222,635.88 is: 9,966,896.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,023,978.70 : 17,972,475.01 = 7,222,635.88 : x
  2. Step 2: Convert to fraction form
    13,023,978.70/17,972,475.01 = 7,222,635.88/x
  3. Step 3: Cross multiply
    13,023,978.70x = 17,972,475.01 × 7,222,635.88
  4. Step 4: Simplify right side
    13,023,978.70x = 129,808,642,859,629.38
  5. Step 5: Solve for x
    x = 129,808,642,859,629.38/13,023,978.70
  6. Step 6: Final answer
    x = 9,966,896.13

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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.