Home / 12,072,421.80-18,129,627.90-6,403,717.80

Finding the Fourth Proportional to 12,072,421.80, 18,129,627.90 and 6,403,717.80

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Solution

The fourth proportional to 12,072,421.80, 18,129,627.90 and 6,403,717.80 is: 9,616,713.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072,421.80 : 18,129,627.90 = 6,403,717.80 : x
  2. Step 2: Convert to fraction form
    12,072,421.80/18,129,627.90 = 6,403,717.80/x
  3. Step 3: Cross multiply
    12,072,421.80x = 18,129,627.90 × 6,403,717.80
  4. Step 4: Simplify right side
    12,072,421.80x = 116,097,020,890,606.61
  5. Step 5: Solve for x
    x = 116,097,020,890,606.61/12,072,421.80
  6. Step 6: Final answer
    x = 9,616,713.43

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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.