Home / 20,702,746-28,569,902.78-12,006,074.84

Finding the Fourth Proportional to 20,702,746, 28,569,902.78 and 12,006,074.84

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Solution

The fourth proportional to 20,702,746, 28,569,902.78 and 12,006,074.84 is: 16,568,448.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,746 : 28,569,902.78 = 12,006,074.84 : x
  2. Step 2: Convert to fraction form
    20,702,746/28,569,902.78 = 12,006,074.84/x
  3. Step 3: Cross multiply
    20,702,746x = 28,569,902.78 × 12,006,074.84
  4. Step 4: Simplify right side
    20,702,746x = 343,012,390,948,204.06
  5. Step 5: Solve for x
    x = 343,012,390,948,204.06/20,702,746
  6. Step 6: Final answer
    x = 16,568,448.98

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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.