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Finding the Fourth Proportional to 13,753,400.79, 18,978,460.59 and 7,558,376.13

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Solution

The fourth proportional to 13,753,400.79, 18,978,460.59 and 7,558,376.13 is: 10,429,881.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753,400.79 : 18,978,460.59 = 7,558,376.13 : x
  2. Step 2: Convert to fraction form
    13,753,400.79/18,978,460.59 = 7,558,376.13/x
  3. Step 3: Cross multiply
    13,753,400.79x = 18,978,460.59 × 7,558,376.13
  4. Step 4: Simplify right side
    13,753,400.79x = 143,446,343,507,601.72
  5. Step 5: Solve for x
    x = 143,446,343,507,601.72/13,753,400.79
  6. Step 6: Final answer
    x = 10,429,881.72

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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.