Home / 20,739,269.14-28,612,209.09-12,990,822.10

Finding the Fourth Proportional to 20,739,269.14, 28,612,209.09 and 12,990,822.10

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Solution

The fourth proportional to 20,739,269.14, 28,612,209.09 and 12,990,822.10 is: 17,922,334.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,269.14 : 28,612,209.09 = 12,990,822.10 : x
  2. Step 2: Convert to fraction form
    20,739,269.14/28,612,209.09 = 12,990,822.10/x
  3. Step 3: Cross multiply
    20,739,269.14x = 28,612,209.09 × 12,990,822.10
  4. Step 4: Simplify right side
    20,739,269.14x = 371,696,118,176,192.88
  5. Step 5: Solve for x
    x = 371,696,118,176,192.88/20,739,269.14
  6. Step 6: Final answer
    x = 17,922,334.47

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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.