Home / 21,420,172.67-29,559,535.89-12,127,503.11

Finding the Fourth Proportional to 21,420,172.67, 29,559,535.89 and 12,127,503.11

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Solution

The fourth proportional to 21,420,172.67, 29,559,535.89 and 12,127,503.11 is: 16,735,783.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420,172.67 : 29,559,535.89 = 12,127,503.11 : x
  2. Step 2: Convert to fraction form
    21,420,172.67/29,559,535.89 = 12,127,503.11/x
  3. Step 3: Cross multiply
    21,420,172.67x = 29,559,535.89 × 12,127,503.11
  4. Step 4: Simplify right side
    21,420,172.67x = 358,483,363,436,131.62
  5. Step 5: Solve for x
    x = 358,483,363,436,131.62/21,420,172.67
  6. Step 6: Final answer
    x = 16,735,783.08

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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.