Home / 21,643,508-29,868,979.92-11,985,716

Finding the Fourth Proportional to 21,643,508, 29,868,979.92 and 11,985,716

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Solution

The fourth proportional to 21,643,508, 29,868,979.92 and 11,985,716 is: 16,540,808.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,643,508 : 29,868,979.92 = 11,985,716 : x
  2. Step 2: Convert to fraction form
    21,643,508/29,868,979.92 = 11,985,716/x
  3. Step 3: Cross multiply
    21,643,508x = 29,868,979.92 × 11,985,716
  4. Step 4: Simplify right side
    21,643,508x = 358,001,110,530,822.75
  5. Step 5: Solve for x
    x = 358,001,110,530,822.75/21,643,508
  6. Step 6: Final answer
    x = 16,540,808.01

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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.