Home / 21,298,263.78-29,391,602.77-11,508,707.69

Finding the Fourth Proportional to 21,298,263.78, 29,391,602.77 and 11,508,707.69

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Solution

The fourth proportional to 21,298,263.78, 29,391,602.77 and 11,508,707.69 is: 15,882,015.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298,263.78 : 29,391,602.77 = 11,508,707.69 : x
  2. Step 2: Convert to fraction form
    21,298,263.78/29,391,602.77 = 11,508,707.69/x
  3. Step 3: Cross multiply
    21,298,263.78x = 29,391,602.77 × 11,508,707.69
  4. Step 4: Simplify right side
    21,298,263.78x = 338,259,364,849,296.06
  5. Step 5: Solve for x
    x = 338,259,364,849,296.06/21,298,263.78
  6. Step 6: Final answer
    x = 15,882,015.94

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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.