Home / 13,026,006.78-17,978,041.14-7,226,656.86

Finding the Fourth Proportional to 13,026,006.78, 17,978,041.14 and 7,226,656.86

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Solution

The fourth proportional to 13,026,006.78, 17,978,041.14 and 7,226,656.86 is: 9,973,980.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,026,006.78 : 17,978,041.14 = 7,226,656.86 : x
  2. Step 2: Convert to fraction form
    13,026,006.78/17,978,041.14 = 7,226,656.86/x
  3. Step 3: Cross multiply
    13,026,006.78x = 17,978,041.14 × 7,226,656.86
  4. Step 4: Simplify right side
    13,026,006.78x = 129,921,134,333,743.23
  5. Step 5: Solve for x
    x = 129,921,134,333,743.23/13,026,006.78
  6. Step 6: Final answer
    x = 9,973,980.25

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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.