Home / 20,643,428.16-28,488,903.12-11,476,224

Finding the Fourth Proportional to 20,643,428.16, 28,488,903.12 and 11,476,224

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Solution

The fourth proportional to 20,643,428.16, 28,488,903.12 and 11,476,224 is: 15,837,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643,428.16 : 28,488,903.12 = 11,476,224 : x
  2. Step 2: Convert to fraction form
    20,643,428.16/28,488,903.12 = 11,476,224/x
  3. Step 3: Cross multiply
    20,643,428.16x = 28,488,903.12 × 11,476,224
  4. Step 4: Simplify right side
    20,643,428.16x = 326,945,033,719,418.88
  5. Step 5: Solve for x
    x = 326,945,033,719,418.88/20,643,428.16
  6. Step 6: Final answer
    x = 15,837,729.62

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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.