Home / 13,133,967.78-18,123,682.68-7,331,681.82

Finding the Fourth Proportional to 13,133,967.78, 18,123,682.68 and 7,331,681.82

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Solution

The fourth proportional to 13,133,967.78, 18,123,682.68 and 7,331,681.82 is: 10,117,055.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133,967.78 : 18,123,682.68 = 7,331,681.82 : x
  2. Step 2: Convert to fraction form
    13,133,967.78/18,123,682.68 = 7,331,681.82/x
  3. Step 3: Cross multiply
    13,133,967.78x = 18,123,682.68 × 7,331,681.82
  4. Step 4: Simplify right side
    13,133,967.78x = 132,877,074,816,404.88
  5. Step 5: Solve for x
    x = 132,877,074,816,404.88/13,133,967.78
  6. Step 6: Final answer
    x = 10,117,055.03

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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.