Home / 21,339,903.63-29,449,780.74-13,078,369.47

Finding the Fourth Proportional to 21,339,903.63, 29,449,780.74 and 13,078,369.47

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Solution

The fourth proportional to 21,339,903.63, 29,449,780.74 and 13,078,369.47 is: 18,048,587.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339,903.63 : 29,449,780.74 = 13,078,369.47 : x
  2. Step 2: Convert to fraction form
    21,339,903.63/29,449,780.74 = 13,078,369.47/x
  3. Step 3: Cross multiply
    21,339,903.63x = 29,449,780.74 × 13,078,369.47
  4. Step 4: Simplify right side
    21,339,903.63x = 385,155,113,328,210
  5. Step 5: Solve for x
    x = 385,155,113,328,210/21,339,903.63
  6. Step 6: Final answer
    x = 18,048,587.29

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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.