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Finding the Fourth Proportional to 13,757,918.40, 20,636,877.60 and 5,668,205.40

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Solution

The fourth proportional to 13,757,918.40, 20,636,877.60 and 5,668,205.40 is: 8,502,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757,918.40 : 20,636,877.60 = 5,668,205.40 : x
  2. Step 2: Convert to fraction form
    13,757,918.40/20,636,877.60 = 5,668,205.40/x
  3. Step 3: Cross multiply
    13,757,918.40x = 20,636,877.60 × 5,668,205.40
  4. Step 4: Simplify right side
    13,757,918.40x = 116,974,061,051,459.06
  5. Step 5: Solve for x
    x = 116,974,061,051,459.06/13,757,918.40
  6. Step 6: Final answer
    x = 8,502,308.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.