Home / 12,390,566.91-17,097,978.63-7,163,910.74

Finding the Fourth Proportional to 12,390,566.91, 17,097,978.63 and 7,163,910.74

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Solution

The fourth proportional to 12,390,566.91, 17,097,978.63 and 7,163,910.74 is: 9,885,616.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390,566.91 : 17,097,978.63 = 7,163,910.74 : x
  2. Step 2: Convert to fraction form
    12,390,566.91/17,097,978.63 = 7,163,910.74/x
  3. Step 3: Cross multiply
    12,390,566.91x = 17,097,978.63 × 7,163,910.74
  4. Step 4: Simplify right side
    12,390,566.91x = 122,488,392,809,357.09
  5. Step 5: Solve for x
    x = 122,488,392,809,357.09/12,390,566.91
  6. Step 6: Final answer
    x = 9,885,616.51

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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.