Home / 21,104,681.78-29,101,333.18-13,748,874.05

Finding the Fourth Proportional to 21,104,681.78, 29,101,333.18 and 13,748,874.05

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Solution

The fourth proportional to 21,104,681.78, 29,101,333.18 and 13,748,874.05 is: 18,958,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104,681.78 : 29,101,333.18 = 13,748,874.05 : x
  2. Step 2: Convert to fraction form
    21,104,681.78/29,101,333.18 = 13,748,874.05/x
  3. Step 3: Cross multiply
    21,104,681.78x = 29,101,333.18 × 13,748,874.05
  4. Step 4: Simplify right side
    21,104,681.78x = 400,110,564,578,906
  5. Step 5: Solve for x
    x = 400,110,564,578,906/21,104,681.78
  6. Step 6: Final answer
    x = 18,958,379.41

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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.