Home / 20,938,694.88-28,883,596.80-12,235,018.08

Finding the Fourth Proportional to 20,938,694.88, 28,883,596.80 and 12,235,018.08

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Solution

The fourth proportional to 20,938,694.88, 28,883,596.80 and 12,235,018.08 is: 16,877,428.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938,694.88 : 28,883,596.80 = 12,235,018.08 : x
  2. Step 2: Convert to fraction form
    20,938,694.88/28,883,596.80 = 12,235,018.08/x
  3. Step 3: Cross multiply
    20,938,694.88x = 28,883,596.80 × 12,235,018.08
  4. Step 4: Simplify right side
    20,938,694.88x = 353,391,329,063,430.12
  5. Step 5: Solve for x
    x = 353,391,329,063,430.12/20,938,694.88
  6. Step 6: Final answer
    x = 16,877,428.66

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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.